| 30AK | Doyle Estates Airport | Kenai AK |
| 30AL | Med Flight 2 Heliport | Danville AL |
| 30AR | Phalanx Airport | Greers Ferry AR |
| 30AZ | Gila Compressor Station Airport | Arlington AZ |
| 30CA | Indian Valley Hospital Heliport | Greenville CA |
| 30CL | Long Beach Memorial Medical Center Heliport | Long Beach CA |
| 30CO | Coyote Creek Ranch Airport | Guffey CO |
| 30F | Lakeview Airport | Lake Dallas TX |
| 30FA | Florida Hospital Lake Placid Heliport | Lake Placid FL |
| 30FD | City Of Fort Lauderdale Heliport | Fort Lauderdale FL |
| 30FL | Columbia Putnam Community Hospital Heliport | Palatka FL |
| 30GA | Elliott Field Airport | Dawsonville GA |
| 30II | Reid Hospital Heliport | Richmond IN |
| 30IL | Clay County Hospital Heliport | Flora IL |
| 30IN | Wigent Airport | Columbia City IN |
| 30IS | Aero Lake Estates Airport | Genoa IL |
| 30K | Ingalls Muni Airport | Ingalls KS |
| 30KY | Wayne County Hospital Heliport | Monticello KY |
| 30LA | Venice Base Heliport & Spb Seaplane Base | Venice LA |
| 30LL | Williams Airpark Airport | Chapin IL |
| 30LS | Rotorcraft Heliport | Broussard LA |
| 30M | Ralph M Sharpe Airport | Tunica MS |
| 30MA | Clinton Hospital Heliport | Clinton MA |
| 30MI | Wolverton's Field Airport | Buchanan MI |
| 30MN | Mayo Clinic Health System - Albert Lea Heliport | Albert Lea MN |
| 30MO | Matzie Airport | Lebanon MO |
| 30NC | Happy Bottom Airport | Advance NC |
| 30NE | Rs Ag-land Airport | Campbell NE |
| 30NJ | Hillside Farm Heliport | Hopewell NJ |
| 30NM | Crusader Heliport | Sedan NM |
| 30NY | Coye Field Airport | Canadice NY |
| 30OH | Bahl Helistop Heliport | Mansfield OH |
| 30OR | Bero Field Airport | Vernonia OR |
| 30PA | Kings Airport | Schwenksville PA |
| 30PN | Pittsburgh Children's Hospital Heliport | Pittsburgh PA |
| 30TA | Tri-modal Air Park Airport | Georgetown TX |
| 30TE | Cone Airport | Ralls TX |
| 30TS | Hall Airport | Ore City TX |
| 30TX | Burg Lake Aero Airport | Stonewall TX |
| 30VA | Clinch Valley Medical Center Heliport | Richlands VA |
| 30W | Sweetwater Bay Seaplane Base | Oconto WI |
| 30WA | Weller Canyon Airport | Waitsburg WA |
| 30WI | Chambers Island Airport | Chambers Island WI |
| 30XA | Emergency Room At Magnolia Heliport | Aubrey TX |
| 30XS | Farwell Spraying Service, Inc Airport | Farwell TX |
| 31AK | Dalrymple's Airport | Fairbanks AK |
| 31AR | Van Buren County Memorial Hospital Heliport | Clinton AR |
| 31AZ | Benson Airport | Benson AZ |
| 31CA | Baldwin Base Heliport | Irvine CA |
| 31CD | Diamond Star Ranch Airport | Colorado City CO |
| 31CL | Presbyterian Intercommunity Hospital Heliport | Whittier CA |
| 31CO | Whomble Airport | Wray CO |
| 31CT | Quiet Corner Heliport | Pomfret CT |
| 31D | Inter County Airport | Irwin PA |
| 31E | Eagles Nest Airport | West Creek NJ |
| 31FA | S & S Avion Ranch Airport | Oxford FL |
| 31FD | Florida State Hospital Heliport | Chattahoochee FL |
| 31FL | Tedford Ranch Airport | Melbourne FL |
| 31GA | Wgcl-tv Heliport | Atlanta GA |
| 31II | Rising Sun Airport | Rising Sun IN |
| 31IL | Tamms Correctional Center Heliport | Tamms IL |
| 31IN | Timber House Airport | Lafayette IN |
| 31IS | Mason District Hospital Heliport | Havana IL |
| 31KS | Mills Field Airport | South Hutchinson KS |
| 31KY | Wild Blue Airport | Paris KY |
| 31LA | Iota Volunteer Fire Department Heliport | Iota LA |
| 31LL | Wilco Heliport | Oregon IL |
| 31LS | Helicopter Management Heliport | New Iberia LA |
| 31MA | Norm's Field Airport | Belchertown MA |
| 31MI | Rentz Ultralight | Niles MI |
| 31MN | Peterson Seaplane Base | Minneapolis MN |
| 31MO | Hannah Airport | Bolckow MO |
| 31NC | Presbyterian Hospital Huntersville Heliport | Huntersville NC |
| 31NY | Troop E Heliport | Canandaigua NY |
| 31OH | Au Heliport | Mansfield OH |
| 31OK | Siegfried Point Heliport | Disney OK |
| 31PA | Foxcatcher Farm Heliport | Newtown Square PA |
| 31PN | Control Dynamics Heliport | Warminster PA |
| 31TA | Vitek Field Airport | Granger TX |
| 31TE | Tenneco Lab Helistop Heliport | Houston TX |
| 31TN | Crockett Hospital Heliport | Lawrenceburg TN |
| 31TS | Flyers Field Airport | Greenville TX |
| 31TX | Scott Airport | Waco TX |
| 31VA | Aberdeen Field Airport | Smithfield VA |
| 31WA | Mary Bridge Heliport | Tacoma WA |
| 31WI | Mcdermott Air Park Airport | Sullivan WI |
| 31WN | Berlin Field Airport | Berlin WI |
| 31XA | Indian Falls Ranch Airport | Llano TX |
| 31XS | Fly-n-ski Airport | Merit TX |
| 32A | Danville Muni Airport | Danville AR |
| 32AK | Hardrock Field Airport | Fairbanks AK |
| 32AR | Stuttgart Memorial Hospital Heliport | Stuttgart AR |
| 32AZ | Scottsdale Healthcare Thompson Peak Hosp Heliport | Scottsdale AZ |
| 32CA | Stone Airstrip Airport | Lemoore CA |
| 32CL | Bob's Flying Service Inc Airport | Knights Landing CA |
| 32CN | Pacific Bell-2300 Imperial Hwy Heliport | El Segundo CA |
| 32CO | Braun Airport | Penrose CO |
| 32FA | Sunset Strip Airpark Airport | Okeechobee FL |
| 32FD | Star Aviation Heliport | Riverview FL |
| 32FL | Meyer Heliport | Orlando FL |
| 32GA | Sebastian Cove Airport | Eatonton GA |
| 32II | Roberts Airport | Vevay IN |
| 32IL | Village Of Tamms Heliport | Tamms IL |
| 32IN | Roto-whirl/ski World Heliport | Nashville IN |
| 32IS | Baker Airport | Kilbourne IL |
| 32KS | Wilkens Airport | Healy KS |
| 32KY | St Elizabeth Medical Center South Heliport | Edgewood KY |
| 32LA | A B Dock Services Heliport | Cameron LA |
| 32LS | Stevens Strip Airport | Ponchatoula LA |
| 32MA | North Adams Rgnl Hospital Heliport | North Adams MA |
| 32MD | Roseland Airport | Sudlersville MD |
| 32MI | William Beaumont Hospital Heliport | Royal Oak MI |
| 32MN | Don's Landing Field Airport | Watkins MN |
| 32MO | Phillips Airport | Fredericktown MO |
| 32MS | Browns Landing Airport | Foxworth MS |
| 32NC | Hall Field Airport | Parkton NC |
| 32NE | Mc Ginn Ranch Airport | Dunning NE |
| 32NJ | George Harms Const Heliport | Farmingdale NJ |
| 32NK | Schoharie Creek Airport | Esperance NY |
| 32NY | S J M Landing Heliport | Washingtonville NY |
| 32OH | Rall Field Airport | Mansfield OH |
| 32OR | Pine Hollow Airport | Wamic OR |
| 32PA | Ragged Mountain Airport | Chaneysville PA |
| 32PN | Black Rock Airport | New Brighton PA |
| 32S | Stevensville Airport | Stevensville MT |
| 32TA | Wilbourn Ranch Airport | Harwood TX |
| 32TE | Granite Shoals Muni Airport | Granite Shoals TX |
| 32TN | Southern Tennessee Medical Center Heliport | Winchester TN |
| 32TS | Seton Medical Center H-4 Heliport | Austin TX |
| 32TX | Hinson Airport | Kenney TX |
| 32VA | Old South Aerodrome Airport | Abingdon VA |
| 32WA | Whitestone Airport | Tonasket WA |
| 32WI | Dalonia Airport | Hortonville WI |
| 32WN | Bowman Airstrip Ultralight | Suring WI |
| 32WY | Double L Ranch Airport | Etna WY |
| 32XA | Medical Center Hospital Heliport | Odessa TX |
| 32XS | Cedar Circle Heliport | Midlothian TX |
| 33A | Fairview Airport | Landrum SC |
| 33AK | Nugget Bench Airport | Nugget Bench AK |
| 33AR | Skypoint Estates Airport | Greers Ferry AR |
| 33AZ | Yolo Ranch Airport | Camp Wood AZ |
| 33C | Jablonski Airport | Nunica MI |
| 33CA | Lloyd's Landing Airport | Rosamond CA |
| 33CL | Oak Country Ranch Airport | Paso Robles CA |
| 33CN | Platform Hillhouse Heliport | Carpinteria CA |
| 33CO | Melby Ranch Airstrip Airport | San Luis CO |
| 33CT | Irish Hills Farms Airport | Bethlehem CT |
| 33FA | Recreation Corporation Airport | Okeechobee FL |
| 33FD | R O Ranch Airport | Mayo FL |
| 33FL | Flying S Ranch Airport | Kenansville FL |
| 33GA | Hudson River Landing Airport | Carnesville GA |
| 33IL | John Scharff Airport | Clinton IL |
| 33IN | Rusby Field Heliport | Palmyra IN |
| 33J | Geneva Muni Airport | Geneva AL |
| 33K | Kinsley Muni Airport | Kinsley KS |
| 33KS | Buena Terra Airport | Topeka KS |
| 33KY | Bigger (stol) Airport | Utica KY |
| 33LA | Sky Ranch Airport | Youngsville LA |
| 33LS | Heart Hospital Heliport | Lafayette LA |
| 33M | Water Valley Muni Airport | Water Valley MS |
| 33MA | Seagate Heliport | Manchester MA |
| 33MD | Greer Airport | Taneytown MD |
| 33MN | Zenith Landing Airport | Hinkley MN |
| 33MO | Leaming Field Airport | Golden City MO |
| 33MS | Freedom Strip Airport | Purvis MS |
| 33MT | Kruger Heliport | West Glacier MT |
| 33N | Delaware Airpark Airport | Dover/cheswold DE |
| 33NC | Pettigrew Moore Aerodrome Airport | Wilmington NC |
| 33NE | Orr Ranch Airport | Hay Springs NE |
| 33NJ | Centra State Medical Center Heliport | Freehold NJ |
| 33NR | Wolf Ridge Airport | Mars Hill NC |
| 33NY | Wayne Delp Airport | West Coxsackie NY |
| 33OH | Sunset Strip Airport | Jerome OH |
| 33OI | Soaring Horse Airport | Chatham Township OH |
| 33OK | Myrick Airport | Edmond OK |
| 33OR | Crow-mag Airport | Elmira OR |
| 33PA | Sutliff Private Airport | Shickshinny PA |
| 33PN | Lackawanna County 911 Center Heliport | Jessup PA |
| 33R | Groveton-trinity County Airport | Groveton TX |
| 33S | Pru Field Airport | Ritzville WA |
| 33SC | Triad Carolinas Hospital Heliport | Florence SC |
| 33TA | Lake Bonanza Airport | Montgomery TX |
| 33TE | Sw Police Station Nr 4 Heliport | Houston TX |
| 33TN | Bradley Memorial Hospital Heliport | Cleveland TN |
| 33TS | Burleson County Hospital Heliport | Caldwell TX |
| 33U | Dutch John Airport | Dutch John UT |
| 33V | Walden-jackson County Airport | Walden CO |
| 33VA | Fox Fire Airport | Halifax VA |
| 33WA | Franz Ranch Airport | Warden WA |
| 33WI | St Mary's Hospital Heliport | Green Bay WI |
| 33XS | Six Mile Volunteer Fire Department Heliport | Hemphill TX |
| 34AK | Cardwell Strip Airport | Palmer AK |
| 34AL | Gaston Steam Plant Heliport | Wilsonville AL |
| 34AR | Woodbridge Field Airport | Marked Tree AR |
| 34AZ | Gila River Memorial Airport | Chandler AZ |
| 34CA | Fiddyment Field Airport | Roseville CA |
| 34CD | Elk Park Ranch Airport | Allenspark CO |
| 34CL | Burney Service Center Heliport | Burney CA |
| 34CN | Bonanza Hills Airport | Snelling CA |
| 34CO | Simons Airport | Aurora CO |
| 34FA | Gezik Seaplane Base | Rockledge FL |
| 34FD | Blue Ridge Flightpark Airport | Oakhill FL |
| 34G | Merillat Airport | Tecumseh MI |
| 34GA | Cobb General Hospital Heliport | Austell GA |
| 34IA | Beck Airport | Russell IA |
| 34ID | Freeman Creek Airport | Cavendish ID |
| 34II | Burk Personal Use Airport | Anderson IN |
| 34IL | G. Bray Airport | Lewistown IL |
| 34KS | St Joseph Heliport | Wichita KS |
| 34KY | Lone Pine Aerodrome Airport | Auburn KY |
| 34LA | Swamp Smith Airport | De Ridder LA |
| 34LL | Il Dept Of Corrections/lawrence County Heliport | Sumner IL |
| 34LS | La Medical Center & Heart Hospital Heliport | Lacombe LA |
| 34M | Campbell Muni Airport | Campbell MO |
| 34MA | Crowhurst Heliport | Manchester-by-the Sea MA |
| 34MI | De Witt Property Airport | Spring Lake MI |
| 34MO | Cyanamid-hannibal Heliport | Hannibal MO |
| 34MS | Colle Field Airport | Gautier MS |
| 34NC | Carolinas Medical Center Heliport | Charlotte NC |
| 34ND | Plath Farms Airport | Davenport ND |
| 34NE | Evans Ranch Airport | Hershey NE |
| 34NH | Stone Song Heliport | Milford NH |
| 34NJ | Blews Airport | Bridgeton NJ |
| 34NY | Hendershot Airport | Hilton NY |
| 34OH | Arend Airport | Mark Center OH |
| 34OI | Mohican Airpark Airport | Shreve OH |
| 34OR | Providence Portland Medical Center Heliport | Portland OR |
| 34PA | Waltz Airport | Gettysburg PA |
| 34PN | Fox Field Airport | Newport PA |
| 34R | Hallettsville Muni Airport | Hallettsville TX |
| 34TA | Jsi Airport | Princeton TX |
| 34TE | Bee Creek Airport | Maypearl TX |
| 34TN | Livingston Hospital Heliport | Livingston TN |
| 34TS | Canyon Lake Airport | Canyon Lake TX |
| 34TX | Buckmaster Heliport | Weatherford TX |
| 34U | Yuba Airport | Elk Rapids MI |
| 34VA | Loudoun Hospital Center Heliport | Leesburg VA |
| 34WA | Orbit Heliport | Washougal WA |
| 34WI | Thiessen Field Airport | Baraboo WI |
| 34XS | Flying Hare Field Airport | Conroe TX |
| 35A | Union County, Troy Shelton Field Airport | Union SC |
| 35AK | Poker Bluff Airport | Willow AK |
| 35AL | Silcox Memorial Heliport | Citronelle AL |
| 35AR | Black Horse Landing Ultralight | Eureka Springs AR |
| 35AZ | Continental Airport | Continental AZ |
| 35C | Wells Airport | Rockford MI |
| 35CA | Los Angeles County/usc Medical Center Heliport | Los Angeles CA |
| 35CL | 59 Ranch Airport | Merced CA |
| 35CN | Farnsworth Ranch Airstrip Airport | Grimes CA |
| 35CO | Lone Tree Ranch Airport | Punkin Center CO |
| 35D | Padgham Field Airport | Allegan MI |
| 35FA | Rimes Lakecrest Airport | Cross Creek FL |
| 35FD | Rush Airport | Trenton FL |
| 35FL | St Vincent's Medical Center Heliport | Jacksonville FL |
| 35GA | Buford Precinct Heliport | Buford GA |
| 35IL | Clarion Field Airport | La Moille IL |
| 35IN | Ellison Airport | Tipton IN |
| 35IS | Enoch Airport | Findlay IL |
| 35JY | Cyber Density Balloon Spot Balloonport | Belle Mead NJ |
| 35KS | Selby Farm Airport | Derby KS |
| 35KY | Welcome Field Airport | Franklin KY |
| 35LA | Ms Pats Airport | Abbeville LA |
| 35LL | Crawford Memorial Hospital Heliport | Robinson IL |
| 35LS | The Bluffs Heliport | St Francisville LA |
| 35M | Vortex Heliport | Long Beach MS |
| 35MA | Idlewide Heliport | Beverly MA |
| 35ME | Matinicus Island Airport | Matinicus Island ME |
| 35MI | Law Field Airport | Vermontville MI |
| 35MN | Wipline Airport | Inver Grove Heights MN |
| 35MO | Camp Clark Ahp Heliport | Nevada MO |
| 35NC | Johnston Airport | Mooresville NC |
| 35NE | Shelburnes Airport | Ogallala NE |
| 35NH | Cobbetts Pond Seaplane Base | Windham NH |
| 35NJ | Mid-state Heliport | Somerville NJ |
| 35NK | Tiger Paw Aerodrome Airport | Lyndonville NY |
| 35NY | Ciszak Airport | Springville NY |
| 35OH | Gainey Heliport | Massillon OH |
| 35OI | Fawcett Center For Tomorrow Heliport | Columbus OH |
| 35OL | Henderson Farm Airport | Mooreland OK |
| 35PA | Spring Land Heliport | Plumsteadville PA |
| 35PN | Sabinsville-consolidated Heliport | Westfield PA |
| 35S | Wasco State Airport | Wasco OR |
| 35TA | Texas Health Presbyterian Hospital Plano Heliport | Plano TX |
| 35TE | Ne Police Station Nr 2 Heliport | Houston TX |
| 35TN | Dekalb Baptist Hospital Heliport | Smithville TN |
| 35TS | Hempstead Gliderport | Hempstead TX |
| 35TX | Flying B Ranch Airstrip Airport | Abilene TX |
| 35VA | Community Memorial Healthcenter Heliport | South Hill VA |
| 35WA | Fisher Ranch Airport | Washtucna WA |
| 35WI | Barker Strip Airport | East Troy WI |
| 35XS | Nocona General Hospital Heliport | Nocona TX |
| 36AK | Flyway Farm Airstrip Airport | Wasilla AK |
| 36AL | Hidden Springs Airpark Airport | Ozark AL |
| 36AR | David Stanley Memorial Airport | Gregory AR |
| 36AZ | Valley Farms Airport | Coolidge AZ |
| 36CA | Stone Land Co Airport | Stratford CA |
| 36CL | Tri-city Hospital Heliport | Oceanside CA |
| 36CO | Fat Chance Airport | Peyton CO |
| 36FA | Magic Air Adventure Heliport | Kissimmee FL |
| 36FD | Bay Helicopters Heliport | Panama City FL |
| 36FL | Mease Hospital Countryside Heliport | Safety Harbor FL |
| 36GA | Lola Landing Airport | Conyers GA |
| 36H | Squaw Harbor Seaplane Base | Squaw Harbor AK |
| 36ID | Dorothy Roeber Memorial Heliport | Atlanta ID |
| 36II | Newby Landing Airport | Brownsburg IN |
| 36IL | Batchtown Heliport | Batchtown IL |
| 36IN | Peterson Ultralight | North Liberty IN |
| 36K | Lakin Airport | Lakin KS |
| 36KS | White Farms Airport | Galesburg KS |
| 36KY | Arnolds Airport | Springfield KY |
| 36LA | Lafayette Training Center - Cusa Heliport | Lafayette LA |
| 36LL | Calhoun Medical Center Heliport | Hardin IL |
| 36LS | Squires Heliport | Jeanerette LA |
| 36MO | Harrison Pvt Airport | Rolla MO |
| 36NC | Greensboro North Airport | Greensboro NC |
| 36NE | Frevert Airstrip Airport | Wausa NE |
| 36NH | Long Pond Landing Heliport | Pelham NH |
| 36NJ | Colliers Mills Heliport | Cassville NJ |
| 36NY | Dew Airpark Airport | Cuba NY |
| 36OH | Wright's Field Airport | Conesville OH |
| 36OK | Jones Air Park Airport | Tecumseh OK |
| 36OR | Jasper Ridge Airstrip Airport | Springfield/jasper OR |
| 36PA | Episcopal Hospital Heliport | Philadelphia PA |
| 36PN | Us Army Reserve Center Heliport | Edgemont PA |
| 36S | Happy Camp Airport | Happy Camp CA |
| 36TA | G W Heliport | San Antonio TX |
| 36TE | Nw Police Station Nr 5 Heliport | Houston TX |
| 36TN | Ruckman Field Airport | Clarksville TN |
| 36TS | 4bh Heliport | Georgetown TX |
| 36TX | Bevoni-flying B Airport | Whitesboro TX |
| 36U | Heber City Muni - Russ Mcdonald Field Airport | Heber UT |
| 36UT | Park City Rgnl Medical Center Heliport | Park City UT |
| 36VA | Carilion Westlake Center Heliport | Hardy VA |
| 36VT | North Hero Passage Seaplane Base | North Hero VT |
| 36WA | Bob's Field Airport | Trout Lake WA |
| 36WI | Holland Air Park Airport | Holmen WI |
| 36XA | Central Texas Medical Center Hospital Heliport | San Marcos TX |
| 36XS | Mill Iron Ranch South Airport | Wellington TX |
| 37AA | Point Thomson Airstrip Airport | Deadhorse AK |
| 37AK | Big Mountain Airport | Big Mountain AK |
| 37AR | Beech Creek Airport | Hamburg AR |
| 37AZ | Sarita Airport | Coolidge AZ |
| 37CA | Billy Joe Airport | Temecula CA |
| 37CL | Lyall Airport | Escondido CA |
| 37CO | Ash Mesa Heliport | Olathe CO |
| 37F | Munday Muni Airport | Munday TX |
| 37FA | Florida Hospital Heliport | Orlando FL |
| 37FL | Flying Harness Farms Airport | Bell FL |
| 37I | Troy Skypark Airport | Troy OH |
| 37ID | Hungry Ridge Ranch Airport | Grangeville ID |
| 37IL | Minder Airport | Lincoln IL |
| 37IN | Felix Airport | Stockwell IN |
| 37IS | Hilbert Airport | Marengo IL |
| 37K | Falconhead Airport | Burneyville OK |
| 37KY | Uk Hospital Heliport | Lexington KY |
| 37LA | Wayne Brown Airport | Clayton LA |
| 37LL | Dale Curten Farm Airport | Modoc IL |
| 37LS | Vortex 2 Heliport | New Iberia LA |
| 37M | Hornersville Memorial Airport | Hornersville MO |
| 37MA | Hanson Heliport | Wilbraham MA |
| 37MI | Handleman Sky Ranch Airport | Oxford MI |
| 37MN | Nagel And Schultz Airport | Belle Plaine MN |
| 37MO | Mayes Homestead Airport | Polo MO |
| 37N | Garrison Dam Recreational Airpark Airport | Riverdale ND |
| 37NC | Valdese General Hospital Heliport | Valdese NC |
| 37ND | Sunset Strip Airport | Dunn Center ND |
| 37NE | Watermeier Airport | Burr NE |
| 37NJ | Deepwater Heliport | Deepwater NJ |
| 37NY | Cuba Memorial Hospital Heliport | Cuba NY |
| 37OH | Southwest General Hospital Heliport | Middleburg Heights OH |
| 37OI | Cole Airfield Airport | Crestline OH |
| 37OK | Valley View Hospital Heliport | Ada OK |
| 37OR | Vey Sheep Ranch Airport | Starkey OR |
| 37PA | Roadcap Airport | Middleburg PA |
| 37PN | Hanover Hospital Heliport | Hanover PA |
| 37S | Fort Peck Airport | Fort Peck MT |
| 37T | Calico Rock-izard County Airport | Calico Rock AR |
| 37TA | Texas Health Presbyterian Hospital Dallas Heliport | Dallas TX |
| 37TE | Freyer Field Airport | Hitchcock TX |
| 37TN | Univ Of Tennessee Lifestar Sweetwater Heliport | Sweetwater TN |
| 37TS | Skinner Airport | Greenville TX |
| 37TX | Yates Field Airport | San Saba TX |
| 37V | Arapahoe Muni Airport | Arapahoe NE |
| 37VA | St. Mary's Hospital Heliport | Richmond VA |
| 37VT | Brisson Airport | Shoreham VT |
| 37WA | Baumann Farm Inc. Airport | Washtucna WA |
| 37WI | Docken Field Airport | Mount Horeb WI |
| 37XA | Skydive Houston Airport | Waller TX |
| 37XS | Lake Whitney Country Club Airport | Whitney TX |
| 38AK | Mels Airport | Wasilla AK |
| 38AR | Williams Field Airport | Siloam Springs AR |
| 38AZ | Peabody Bedard Field Airport | Kayenta AZ |
| 38C | Cain Field Airport | Stanwood MI |
| 38CA | Cashen Airport | Wasco CA |
| 38CL | Riego Flight Strip Airport | Verona CA |
| 38CN | Sanborn Airport | Meridian CA |
| 38CO | Basin Clinic Heliport | Naturita CO |
| 38D | Salem Airpark Inc Airport | Salem OH |
| 38FA | Blue Springs Airport | Madison FL |
| 38FD | Griffin's Main Office Heliport | Frostproof FL |
| 38FL | Flagler Hospital Heliport | St Augustine FL |
| 38GA | Lanier Park Hospital Heliport | Gainesville GA |
| 38I | Weller Airport | Urbana OH |
| 38ID | Sky Ranch North Airport | Nampa ID |
| 38II | Hampton Field Airport | Greencastle IN |
| 38IN | Fuller Field Airport | Brownsburg IN |
| 38IS | Winchester Airport | Nauvoo IL |
| 38J | Hemingway-stuckey Airport | Hemingway SC |
| 38K | Lucas Airport | Lucas KS |
| 38KY | Grant County Hospital Heliport | Williamstown KY |
| 38LA | Whiteville Airport | Ville Platte LA |
| 38LL | Gateway Rgnl Medical Center Heliport | Granite City IL |
| 38LS | Ace Flying Airport | Parks LA |
| 38MI | Chicora Field Airport | Allegan MI |
| 38MN | Chandler Personal Use Airport | Bemidji MN |
| 38MO | Barber Airport | Annada MO |
| 38MS | Shadycreek Acres Airport | Brookhaven MS |
| 38N | Smyrna Airport | Smyrna DE |
| 38NC | Bhh Aviation Airport | Ruffin NC |
| 38ND | Schroeder Private Airport | Erie ND |
| 38NE | Boardman Aerial Airport | Henderson NE |
| 38NJ | Wjrz Radio Heliport | Manahawkin NJ |
| 38NK | Tamarack Acres Airport | Hagaman NY |
| 38NY | Greenlawn Farm Airport | Dundee NY |
| 38OH | Industry Air Park Airport | Baltimore OH |
| 38OI | Ronshausen Airport | Darbyville OH |
| 38OK | Duncan Rgnl Hospital Heliport | Duncan OK |
| 38OR | Pge Boardman Heliport | Boardman OR |
| 38PA | Aerequus Airport | Solebury PA |
| 38PN | Waisley Airport | Mc Kean PA |
| 38S | Deer Lodge-city-county Airport | Deer Lodge MT |
| 38SC | La Dolce Terra Airport | Gaffney SC |
| 38TA | Kurio Heliport | Houston TX |
| 38TE | John S Dunn Helistop Heliport | Houston TX |
| 38TN | Sugar Grove Airport | Westmoreland TN |
| 38TS | Steeplechase Heliport | Houston TX |
| 38TX | Lyndon B Johnson General Hospital Heliport | Houston TX |
| 38U | Wayne Wonderland Airport | Loa UT |
| 38UT | Hoytsville Airport | Coalville UT |
| 38VA | State Police Division Three Heliport | Appomattox VA |
| 38W | Lynden Airport | Lynden WA |
| 38WA | Blakely Island Airport | Blakely Island WA |
| 38WI | Northport Airport | Royalton WI |
| 38WV | River's Edge Farm Airport | Capon Bridge WV |
| 38XA | Walk-air Airport | Tyler TX |
| 38XS | San Rafael Ranch Airport | Santa Elena TX |
| 39AK | Gilmore Strip Airport | Palmer AK |
| 39B | Nugent Chamberlain Lake Seaplane Base | Chesuncook ME |
| 39CA | Sce Palm Springs District Heliport | Cathedral City CA |
| 39CL | Castle Heliport | Perris CA |
| 39CN | Ukiah Valley Medical Center Heliport | Ukiah CA |
| 39CO | Flying M Ranch Airport | Montrose CO |
| 39FA | Sanders Ranch Airport | Melrose FL |
| 39FD | Ancient Oaks Airport | Steinhatchee FL |
| 39FL | Palm Beach Sheriff's Range Heliport | West Palm Beach FL |
| 39G | Avoca Airport | Avoca MI |
| 39GA | Wayne Memorial Hospital Heliport | Jesup GA |
| 39IA | Husband Field Airport | Dallas Center IA |
| 39II | Miller Field Airport | Topeka IN |
| 39IN | Roberts Field Airport | Sulphur Springs IN |
| 39K | Pomona Lake Airport | Lyndon KS |
| 39KY | Somerset-pulaski Co Ems Heliport | Somerset KY |
| 39LA | Whitaker Ultralight | Chataignier LA |
| 39LL | Sullivan Airport | Hamilton IL |
| 39MI | Huber Airport | Crystal Falls MI |
| 39MN | Anthony Private Airport | Two Harbors MN |
| 39MO | Gardner Airport | Springfield MO |
| 39N | Princeton Airport | Princeton/rocky Hill NJ |
| 39NC | Rebel Field Heliport | Rutherfordton NC |
| 39NJ | Troop B Heliport | Totowa NJ |
| 39NY | Print Pad Heliport | Freeport NY |
| 39OH | Crosswind Meadows Airport | Minerva OH |
| 39OK | Paradise Air Haven Airport | Goldsby OK |
| 39OR | Croman Heliport | White City OR |
| 39P | Strom Field Airport | Morton WA |
| 39PA | Gehris Airport | Souderton PA |
| 39PN | Nelson's Run Airport | Mercer PA |
| 39R | Flyin' B Airport | Houston TX |
| 39T | Tripp Creek Airport | St Johns MI |
| 39TA | Flying Tigers Airport | Paris TX |
| 39TE | Seminole Spraying Service Airport | Seminole TX |
| 39TN | Big Sandy Airpark Airport | Big Sandy TN |
| 39TS | Hearthstone Heliport | Houston TX |
| 39TX | Sony Microelectronics Helistop Heliport | San Antonio TX |
| 39WA | Tailskid Ranch Airport | Tum Tum WA |
| 39WI | S & S Ranch Airport | Viola WI |
| 39XS | Kimble Hospital Heliport | Junction TX |
| 39Z | Flying-a-ranch Airport | Fruitport MI |
| 3A0 | Grove Hill Muni Airport | Grove Hill AL |
| 3A2 | New Tazewell Muni Airport | Tazewell TN |
| 3A3 | Seymour Lake Spb Seaplane Base | Wasilla AK |
| 3A4 | Southeast Greensboro Airport | Greensboro NC |
| 3A7 | Eutaw Muni Airport | Eutaw AL |
| 3A9 | Arlington Muni Airport | Arlington SD |
| 3AA3 | Cvtc Field Heliport | Valdez AK |
| 3AK | Dry Bay Airport | Yakutat AK |
| 3AK2 | Niklason Lake Estates Airport | Palmer AK |
| 3AK3 | Songlo Vista Airport | Talkeetna AK |
| 3AK4 | Johnson Airport | Kenai AK |
| 3AK5 | Drift River Airport | Kenai AK |
| 3AK6 | B & B Boys Ranch Airport | Palmer AK |
| 3AK7 | Laub Airport | Willow AK |
| 3AK8 | Boisselle's Strip Airport | Wasilla AK |
| 3AK9 | River John Airport | Skwentna AK |
| 3AL0 | Fayette Medical Center Heliport | Fayette AL |
| 3AL1 | Flying H Ranch Airport | Hartford AL |
| 3AL2 | East Alabama Medical Center Heliport | Opelika AL |
| 3AL3 | Tuscaloosa Police Department Heliport | Tuscaloosa AL |
| 3AL4 | Foley Hospital Heliport | Foley AL |
| 3AL5 | Edwards Farm Airport | Jacksonville AL |
| 3AL6 | Town & Country Airpark Airport | Odenville AL |
| 3AL7 | Flowers Field Airport | Thomaston AL |
| 3AL8 | Flint River Ranch Airport | Owens Crossroads AL |
| 3AL9 | Cullman Rgnl Medical Center Heliport | Cullman AL |
| 3AR0 | Frost Flying Inc Airport | Marianna AR |
| 3AR1 | Pine Mountain Heliport | Yellville AR |
| 3AR2 | Ridgeway Field Airport | Harrison AR |
| 3AR3 | Cypress Creek Airport | Cabot AR |
| 3AR4 | Four Mile Creek Ranch Airport | Cabot AR |
| 3AR5 | Tripp Strip Airport | Griffithville AR |
| 3AR6 | Crystal Ridge Airport | Little Rock AR |
| 3AR7 | Taylor Field Airport | Lowell AR |
| 3AR8 | River Acres Airport | Heber Springs AR |
| 3AR9 | Hog Air Aviation Inc Airport | Paragould AR |
| 3AU | Augusta Muni Airport | Augusta KS |
| 3AZ0 | Flagstaff Medical Center East No. 2 Heliport | Flagstaff AZ |
| 3AZ1 | Pixley-richards Gilbert Heliport | Gilbert AZ |
| 3AZ2 | U Of A Maricopa Ag Center Airport | Maricopa AZ |
| 3AZ4 | John C Lincoln Deer Valley Hospital Heliport | Phoenix AZ |
| 3AZ5 | Hualapai Airport | Peach Springs AZ |
| 3AZ6 | Banner Del E Webb Medical Center Heliport | Sun City West AZ |
| 3AZ7 | The Buttes In Tempe Heliport | Tempe AZ |
| 3AZ8 | High Mesa Airpark Airport | Solomon AZ |
| 3AZ9 | Ina Road Heliport | Tucson AZ |
| 3B0 | Southbridge Muni Airport | Southbridge MA |
| 3B1 | Greenville Muni Airport | Greenville ME |
| 3B3 | Sterling Airport | Sterling MA |
| 3B4 | Littlebrook Air Park Airport | Eliot ME |
| 3B5 | Twitchell Airport | Turner ME |
| 3B8 | Shady Acres Airport | Spanaway WA |
| 3C1 | Mishawaka Pilots Club Airport | Elkhart IN |
| 3C3 | Campbell Lake Spb Seaplane Base | Anchorage AK |
| 3C8 | Calverton Executive Airpark Airport | Calverton NY |
| 3CA0 | Burroughs Heliport | Wasco CA |
| 3CA1 | Newport Beach Police Heliport | Newport Beach CA |
| 3CA2 | Jamboree Center Helistop Heliport | Irvine CA |
| 3CA5 | West Hollywood Sheriff's Helistop Heliport | West Hollywood CA |
| 3CA6 | J.h. Snyder Co. Iii Heliport | Los Angeles CA |
| 3CA7 | Metz Airport | Greenfield CA |
| 3CA8 | Holy Cross Medical Center Heliport | San Fernando CA |
| 3CA9 | Clark Ranch Airport | Soledad CA |
| 3CK | Lake In The Hills Airport | Chicago/lake In The Hills IL |
| 3CL0 | Uc Davis Medical Center Tower Ii Heliport | Sacramento CA |
| 3CL1 | Metropolitan Water District Heliport | Los Angeles CA |
| 3CL3 | World Trade Center Heliport | Long Beach CA |
| 3CL4 | Super Bowl Heliport | Pasadena CA |
| 3CL5 | Chase Plaza Heliport | Los Angeles CA |
| 3CL6 | Long Point Heliport | Rancho Palos Verdes CA |
| 3CL7 | Raleigh Enterprises Heliport | Los Angeles CA |
| 3CL8 | Toyota Helistop Heliport | Torrance CA |
| 3CL9 | Sce Northern Division Heliport | San Buenaventura CA |
| 3CM | James Clements Muni Airport | Bay City MI |
| 3CN2 | Santa Barbara Cottage Hospital Heliport | Santa Barbara CA |
| 3CN4 | Kaiser Permanente Anaheim Medical Center Heliport | Anaheim CA |
| 3CN5 | Los Angeles County Sheriffs Dept South La Heliport | Los Angeles CA |
| 3CN7 | Alta Mesa Airpark Airport | Wilton CA |
| 3CO0 | Sky Island Ranch Airport | Delta CO |
| 3CO1 | Cridler Field Airport | Hotchkiss CO |
| 3CO2 | Mertens Airport | Sterling CO |
| 3CO3 | Sterling Rgnl Med Center Heliport | Sterling CO |
| 3CO4 | Tercio Ranch Airstrip Airport | Stonewall CO |
| 3CO5 | Texas Creek Heliport | Texas Creek CO |
| 3CO7 | Dietrichs Airport | Elizabeth CO |
| 3CO8 | E.p.m.c. Heliport | Estes Park CO |
| 3CO9 | D B Smith Memorial Heliport | Victor CO |
| 3CU | Cable Union Airport | Cable WI |
| 3D1 | Crivitz Muni Airport | Crivitz WI |
| 3D2 | Ephraim-gibraltar Airport | Ephraim WI |
| 3D8 | Bordner Airport | Bowling Green OH |
| 3DA | Dalton Airport | Flushing MI |
| 3DW | Downtown Airport | Springfield MO |
| 3E0 | Miami-roberts County Airport | Miami TX |
| 3EV | Skylane Airport | Evansville IN |
| 3EX | Excelsior Springs Memorial Airport | Excelsior Springs MO |
| 3F2 | Cisco Muni Airport | Cisco TX |
| 3F3 | C E 'rusty' Williams Airport | Mansfield LA |
| 3F4 | Vivian Airport | Vivian LA |
| 3F5 | Forest Hill Airport | Westphalia MI |
| 3F6 | Dan E Richards Muni Airport | Paducah TX |
| 3F7 | Jones Memorial Airport | Bristow OK |
| 3F9 | Mineola Wisener Field Airport | Mineola TX |
| 3FA2 | Fly High Heliport | Kissimmee FL |
| 3FA3 | Southfork Heliport | Saint Cloud FL |
| 3FA4 | Gulf Coast Medical Center Heliport | Fort Myers FL |
| 3FA5 | Richard Kohler Heliport | Osteen FL |
| 3FA8 | Searey Central Seaplane Base | Tavares FL |
| 3FD0 | Last Chance Ranch Airport | Lake Placid FL |
| 3FD1 | Ormc Trauma Center Heliport | Ocala FL |
| 3FD2 | L R M C Emergency Helistop Heliport | Leesburg FL |
| 3FD3 | Holmes Rgnl Medical Center Heliport | Melbourne FL |
| 3FD4 | Florida Flying Gators Ultralight | Minneola FL |
| 3FD5 | Arnold Palmer Hospital Heliport | Orlando FL |
| 3FD6 | Tradewinds Aerodrome Airport | Scottsmoor FL |
| 3FD7 | Indian River Memorial Hospital Heliport | Vero Beach FL |
| 3FD8 | West Boca Medical Center Heliport | Boca Raton FL |
| 3FD9 | Prairie Lake Pvt Res Sp Mooring Facility Seaplane Base | Altamonte Springs FL |
| 3FK | Franklin Flying Field Airport | Franklin IN |
| 3FL0 | Mount Royal Airport | Welaka FL |
| 3FL1 | Two J's Flying Ranch Airport | Dade City FL |
| 3FL2 | Florida Hospital-fish Memorial Heliport | Orange City FL |
| 3FL3 | Sheriff's Operation Center Heliport | Ocala FL |
| 3FL4 | Knobel Heliport | Cocoa FL |
| 3FL6 | Wink Tv Heliport | Fort Myers FL |
| 3FL7 | Mack Bayor Airheart Heliport | Destin FL |
| 3FL8 | Hart Airport | Malone FL |
| 3FL9 | Sun N Lake Heliport | Sebring FL |
| 3FU | Faulkton Muni Airport | Faulkton SD |
| 3G2 | Grygla Muni - Mel Wilkens Field Airport | Grygla MN |
| 3G3 | Wadsworth Muni Airport | Wadsworth OH |
| 3G4 | Ashland County Airport | Ashland OH |
| 3G5 | Dawson Aaf Airport | Camp Dawson (kingwood) WV |
| 3G6 | Tri-city Airport | Sebring OH |
| 3G8 | Gen-airpark Airport | Geneseo IL |
| 3G9 | Butler Farm Show Airport | Butler PA |
| 3GA0 | Grant Airport | Stockbridge GA |
| 3GA1 | Prattsburg Airport | Talbotton GA |
| 3GA2 | Tanner Medical Center Heliport | Carrollton GA |
| 3GA3 | Warren Field Airport | Lookout Mountain GA |
| 3GA4 | Stonewall Heliport | Union City GA |
| 3GA5 | Diamond R Ranch Airport | Villa Rica GA |
| 3GA6 | Erlen Airport | Whitesburg GA |
| 3GA7 | Rhodes Air Ranch Airport | Waynesboro GA |
| 3GA8 | Cauley's Airstrip Airport | Soperton GA |
| 3GA9 | Vintage Fld Airport | Zebulon GA |
| 3GE1 | Okefenokee Heliport | Folkston GA |
| 3GE2 | Williams Heliport | Stone Mountain GA |
| 3GE3 | Broad River Air Park Airport | Carnesville GA |
| 3GE5 | Rockdale Hospital Heliport | Conyers GA |
| 3GE6 | Wellstar Douglas Hospital Heliport | Douglasville GA |
| 3GE8 | Prater Ranch Airport | Lincolnton GA |
| 3GE9 | Holly Farm Airport | Woodstock GA |
| 3GM | Grand Haven Memorial Airpark Airport | Grand Haven MI |
| 3GV | East Kansas City Airport | Grain Valley MO |
| 3H3 | Cottonwood Lake Seaplane Base | Wasilla AK |
| 3H4 | Hillsboro Muni Airport | Hillsboro ND |
| 3H5 | Erie Air Park Ultralight | Erie IL |
| 3HO | Hobart Sky Ranch Airport | Hobart IN |
| 3I2 | Mason County Airport | Point Pleasant WV |
| 3I3 | Sky King Airport | Terre Haute IN |
| 3I4 | Richwood Muni Airport | Richwood WV |
| 3I7 | Phillipsburg Airport | Phillipsburg OH |
| 3IA0 | Washington County Hospital Heliport | Washington IA |
| 3IA1 | Whites Airport | Melbourne IA |
| 3IA2 | Greene County Medical Center Heliport | Jefferson IA |
| 3IA3 | Des Moines General Hospital Heliport | Des Moines IA |
| 3IA6 | Ottumwa Hospital Heliport | Ottumwa IA |
| 3IA8 | Kah Heliport | Keokuk IA |
| 3ID2 | The Last Resort Airport | Weippe ID |
| 3ID4 | Health Center Heliport | Glenns Ferry ID |
| 3IG3 | Terry's Airport | Columbia City IN |
| 3II0 | Murphy Airport | Fremont IN |
| 3II1 | Shenandoah Flying Fld Airport | Gosport IN |
| 3II2 | Fifer Field Ultralight | Griffin IN |
| 3II3 | Basting Airport | Woodburn IN |
| 3II7 | Army Aviation Support Facility Heliport | Shelbyville IN |
| 3II8 | Birkey Private Airport | Bremen IN |
| 3II9 | Dick's Strip Airport | Arcola IN |
| 3IL0 | Patten Industries Heliport | Elmhurst IL |
| 3IL1 | Silver Creek Gliderport | New Douglas IL |
| 3IL2 | Sweedler Airport | Elwood IL |
| 3IL3 | Stillman Fire Heliport | Stillman Valley IL |
| 3IL4 | Maaks Heliport | Middletown IL |
| 3IL6 | Pinckneyville Correctional Center Heliport | Pinckneyville IL |
| 3IL7 | Home Free Airport | Steward IL |
| 3IL8 | Evanston Hospital-golf Course Site Heliport | Evanston IL |
| 3IL9 | Sugar Creek Farm Airport | Atlanta IL |
| 3IN0 | Flying M Airport | Portage IN |
| 3IN3 | Turner Farms Airport | Brazil IN |
| 3IN4 | Johnson Airport | Markle IN |
| 3IN5 | Pippenger Airport | Albion IN |
| 3IN6 | Holloway Field Airport | New Washington IN |
| 3IN7 | Chain-o-lakes Airport | South Bend IN |
| 3IN8 | Ddt Field Airport | Culver IN |
| 3IN9 | Culley Acres Airport | Mount Vernon IN |
| 3IS1 | Mc Coy Airport | Blue Mound IL |
| 3IS3 | Noland Rla Airport | Blue Mound IL |
| 3IS4 | Merkle Airport | Hanover IL |
| 3IS5 | Holmes Airport | Pawnee IL |
| 3IS7 | Foote Airport | Wenona IL |
| 3IS8 | Rinkenberger Rla Airport | Bradford IL |
| 3IS9 | Grand Tower Heliport | Grand Tower IL |
| 3J0 | Hampton-varnville Airport | Hampton SC |
| 3J1 | Ridgeland Airport | Ridgeland SC |
| 3J6 | Davis Field Airport | Folkston GA |
| 3J7 | Greene County Rgnl Airport | Greensboro GA |
| 3JC | Freeman Field Airport | Junction City KS |
| 3JY2 | Cherry Hill Heliport | Parsippany-troy Hills NJ |
| 3K3 | Syracuse-hamilton County Muni Airport | Syracuse KS |
| 3K6 | St Louis Metro-east/shafer Field Airport | St Jacob IL |
| 3K7 | Mark Hoard Memorial Airport | Leoti KS |
| 3K8 | Comanche County Airport | Coldwater KS |
| 3K9 | Upper Wasilla Lake Seaplane Base | Wasilla AK |
| 3KK | Kankakee Airport | Kankakee IL |
| 3KS0 | Stormont-vail Hospital Heliport | Topeka KS |
| 3KS1 | Mesa Verde Airport | Topeka KS |
| 3KS3 | Rogers Airport | Udall KS |
| 3KS4 | Eveleigh Farms Airport | Ulysses KS |
| 3KS5 | High Point Airport | Valley Center KS |
| 3KS6 | Mercy Rgnl Health Center Heliport | Manhattan KS |
| 3KS7 | Berwick Airport | Valley Center KS |
| 3KS8 | Reed-wilsonton Airport | Altamont KS |
| 3KY0 | Lamar Field Airport | Hawesville KY |
| 3KY1 | Goode Airpark Airport | Utica KY |
| 3KY2 | Chesnut Knolls Airport | London KY |
| 3KY3 | Mason Valley Airport | Taylorsville KY |
| 3KY4 | Craw Daddy Landing Airport | Carrollton KY |
| 3KY5 | Carroll County Hospital Heliport | Carrollton KY |
| 3KY7 | Eagle's Nest Airport | Battletown KY |
| 3KY8 | Fidelity Heliport | Covington KY |
| 3KY9 | Miles Field Airport | Shelbyville KY |
| 3L2 | Sky Ranch Airport | Sandy Valley NV |
| 3L7 | Milwrick Flying M Airport | Lincoln MI |
| 3LA1 | Wilder Airport | Kinder LA |
| 3LA3 | La Coste Construction Co Airport | Baton Rouge LA |
| 3LA4 | Little Pecan Island Airport | Lake Arthur LA |
| 3LA6 | Morgan Crop Service Nr 2 Airport | Lake Charles LA |
| 3LA7 | Variable Bor Ram Heliport | Broussard LA |
| 3LA8 | Open A-1 Ranch Airport | Lake Charles LA |
| 3LF | Litchfield Muni Airport | Litchfield IL |
| 3LL0 | Miller Airport | South Beloit IL |
| 3LL1 | Herschel Hunter Airport | Marissa IL |
| 3LL2 | Hammond-henry Hospital Heliport | Geneseo IL |
| 3LL3 | Kibler Airport | Marshall IL |
| 3LL4 | Pillow Hill Airport | Spring Grove IL |
| 3LL5 | Richardson Field Airport | Spring Grove IL |
| 3LL6 | Bickel Airport | New Athens IL |
| 3LL7 | St Margarets Hospital Heliport | Spring Valley IL |
| 3LL8 | Mc Leansboro Airport | Mc Leansboro IL |
| 3LL9 | Compton Airport | Pocahontas IL |
| 3LS3 | Jefferson Parish Sheriff's Office Heliport | New Orleans LA |
| 3LS7 | Bock Farms Airport | Williamsville IL |
| 3LS8 | The Place Airport | Folsom LA |
| 3M0 | Gastons Airport | Lakeview AR |
| 3M2 | Double Springs-winston County Airport | Double Springs AL |
| 3M5 | Moontown Airport | Huntsville AL |
| 3M7 | Lafayette Muni Airport | Lafayette TN |
| 3M8 | North Pickens Airport | Reform AL |
| 3M9 | Warren Muni Airport | Warren AR |
| 3MA0 | Compaq Woburn Heliport | Woburn MA |
| 3MA1 | Marlborough Hospital Heliport | Marlborough MA |
| 3MA2 | Baines Airport | Middlefield MA |
| 3MA3 | Seapuit Heliport | Barnstable MA |
| 3MA4 | North Chatham Heliport | Chatham MA |
| 3MA5 | Westport Airport | Westport MA |
| 3MA7 | Gear Plant Heliport | Lynn MA |
| 3MA9 | Marston Mills Heliport | Marston Mills MA |
| 3MD0 | Burhans Memorial Airport | Frederick MD |
| 3MD1 | Southern Md Hospital Center Heliport | Clinton MD |
| 3MD2 | Garrett County Memorial Hospital Heliport | Oakland MD |
| 3MD4 | Fairview Airport | Annapolis MD |
| 3MD5 | Hidden Hills Airport | Hurlock MD |
| 3MD6 | West St Mary's Airport | Drayden MD |
| 3MD7 | Green Terrace Heliport | Baltimore MD |
| 3MD8 | Pokety Airport | Cambridge MD |
| 3MD9 | Bonham Airport | Ridge MD |
| 3ME7 | Destiny Cove Seaplane Base | Peru ME |
| 3ME8 | Mast Cove Seaplane Base | Naples ME |
| 3MI0 | Doss Field Airport | Lake George MI |
| 3MI2 | South Fox Island Airport | Northport MI |
| 3MI3 | Zayti Field Heliport | Novi MI |
| 3MI6 | Highland Heliport | Highland MI |
| 3MI7 | Willie Run Airport | Ortonville MI |
| 3MI8 | Bendix Heliport | Southfield MI |
| 3MI9 | Ness Landing Seaplane Base | Rapid River MI |
| 3MN0 | Shadduck Seaplane Base | Annandale MN |
| 3MN2 | Mercy Hospital Heliport | Moose Lake MN |
| 3MN6 | Immanuel - St Joseph's Hospital Heliport | Mankato MN |
| 3MN7 | Blue Sky Airport | Sabin MN |
| 3MN9 | Schumacher Airport | Oster MN |
| 3MO1 | Police Dept Helicopter Maint Facility Heliport | Kansas City MO |
| 3MO2 | Ultra Flight Airpark Ultralight | Berger MO |
| 3MO3 | Research Medical Center Heliport | Kansas City MO |
| 3MO4 | Penman Airport | Portageville MO |
| 3MO5 | Nimsick Airport | Carthage MO |
| 3MO6 | Kitty Hawk Estates Airport | Kearney MO |
| 3MS0 | Grand Gulf Heliport | Port Gibson MS |
| 3MS1 | Thomas Field Airport | Holly Springs MS |
| 3MS3 | Root Hog Airport | Flora MS |
| 3MS4 | Pascagoula Naval Station Heliport | Pascagoula MS |
| 3MS5 | Mitchell's Airport | Vaiden MS |
| 3MS6 | E E Lane Airport | Flora MS |
| 3MS8 | Fairview Farms Airport | Scooba MS |
| 3MS9 | Union Muni Airport | Union MS |
| 3MT3 | Three Cross Ranch Airport | Ryegate MT |
| 3MY | Mount Hawley Auxiliary Airport | Peoria IL |
| 3N6 | Old Bridge Airport | Old Bridge NJ |
| 3N8 | Mahnomen County Airport | Mahnomen MN |
| 3NA0 | Erickson Airport | Clifford ND |
| 3NA2 | Lorentzen Airport | Washburn ND |
| 3NA6 | Risovi Ranch Strip Airport | Hamberg ND |
| 3NA7 | J. R. Heliport | Kensal ND |
| 3NC0 | Clyde Valley Airport | Morganton NC |
| 3NC1 | Welborn Farm Airport | Boonville NC |
| 3NC2 | Garner Road Heliport | Raleigh NC |
| 3NC3 | Tucker Field Airport | Locust NC |
| 3NC4 | Mc Donald Field Airport | Marshville NC |
| 3NC5 | Flying Bj Airport | Stony Point NC |
| 3NC6 | Mc Cachren Field Airport | Harrisburg NC |
| 3NC7 | Maxwell Airport | Sparta NC |
| 3NC8 | Chinquapin Heliport | Cashiers NC |
| 3NC9 | Womble Field Airport | Chapel Hill NC |
| 3ND5 | Gage Flying Farmer Airport | Oriska ND |
| 3NE2 | Phillips Private Airport | Hemingford NE |
| 3NE3 | Wells Airport | Holdrege NE |
| 3NE6 | Burkinshaw Fld Airport | Jamison NE |
| 3NE7 | Pawlet Ranch Airport | Lakeside NE |
| 3NH9 | Longview Heliport | Alton NH |
| 3NJ0 | Hamilton Farm Golf Club Heliport | Bedminster NJ |
| 3NJ1 | Pemberton Airport | Pemberton NJ |
| 3NJ2 | Educational Testing Heliport | Princeton NJ |
| 3NJ3 | Dow Jones & Co. Inc. Heliport | Princeton NJ |
| 3NJ4 | Sarnoff Princeton Heliport | Princeton NJ |
| 3NJ6 | Inductotherm Airport | Rancocas NJ |
| 3NJ8 | Aventis Pharmaceuticals Heliport | Bridgewater NJ |
| 3NJ9 | Allen Airstrip Airport | Vincentown NJ |
| 3NK0 | Mc Kinney Airport | Brockport NY |
| 3NK1 | Community General Hospital Heliport | Harris NY |
| 3NK2 | Bassett Heliport | Cooperstown NY |
| 3NK3 | East Fishkill Heliport | Hopewell Junction NY |
| 3NK4 | Laska Airport | Jamestown NY |
| 3NK5 | Secret Spot Airport | Plattsburgh NY |
| 3NK6 | Tuscarora Plateau Airport | Tuscarora NY |
| 3NK7 | B/g Heliport | Gilboa/grand Gorge NY |
| 3NK8 | B Flat Farm Airport | Copake NY |
| 3NK9 | Arnot Ogden Hospital Heliport | Elmira NY |
| 3NO | North Omaha Airport | Omaha NE |
| 3NP | Napoleon Airport | Napoleon MI |
| 3NR3 | Transylvania County Airport | Brevard NC |
| 3NR4 | Crabbe Airport | Elizabeth City NC |
| 3NY0 | The Ranch Airport | Charleston NY |
| 3NY2 | Astoria Heliport | Astoria NY |
| 3NY3 | De Ronda Airport | Springfield NY |
| 3NY4 | Di Stefano Airpark Airport | Fort Plain NY |
| 3NY5 | Luke Airport | Binghamton NY |
| 3NY6 | Six Ponds Airport | Duanesburg NY |
| 3NY7 | Hiserts Airpark Inc Airport | Eparatha NY |
| 3NY8 | Suny Health Science Center Heliport | Syracuse NY |
| 3NY9 | Hilltop Airport | Colden NY |
| 3O1 | Gustine Airport | Gustine CA |
| 3O3 | Purcell Muni - Steven E. Shephard Field Airport | Purcell OK |
| 3O4 | Sayre Muni Airport | Sayre OK |
| 3O5 | Walters Muni Airport | Walters OK |
| 3O8 | Harris Ranch Airport | Coalinga CA |
| 3O9 | Grand Lake Rgnl Airport | Afton OK |
| 3OA3 | Pelton Heliport | Oberlin OH |
| 3OA9 | Memorial Hospital Of Union County Heliport | Marysville OH |
| 3OG3 | Dillon Field Airport | Klamath Falls OR |
| 3OH0 | Andy Barnhart Memorial Airport | New Carlisle OH |
| 3OH1 | Morningstar North Airport | West Alexandria OH |
| 3OH2 | Api Heliport | North Lawrence OH |
| 3OH4 | Riceland Aerodrome Airport | Andover OH |
| 3OH5 | Stub's Field Airport | Alliance OH |
| 3OH6 | Youngpeter Airport | Delphos OH |
| 3OH8 | Gnadenhutten Airport | Gnadenhutten OH |
| 3OH9 | Merts Field Airport | Wilmington OH |
| 3OI4 | Valley View Heliport | Norwalk OH |
| 3OI5 | Welded Heliport | Perrysburg OH |
| 3OI7 | Valley Asphalt Heliport | Sharonville OH |
| 3OI8 | St Luke's Hospital Heliport | Maumee OH |
| 3OI9 | V.j.s. Heliport | Pepper Pike OH |
| 3OK0 | Valley Airport | Ada OK |
| 3OK1 | Okarche Airport | Okarche OK |
| 3OK3 | Cedar Crest Heliport | Locust Grove OK |
| 3OK4 | St Anthony Heliport | Oklahoma City OK |
| 3OK5 | Bearden Private Airstrip Airport | Lindsay OK |
| 3OK6 | Mauney Heliport | Tulsa OK |
| 3OK7 | Double W Airport | Sand Springs OK |
| 3OK8 | Flying G Ranch Airport | Sand Springs OK |
| 3OK9 | Jazz Ranch Airport | Shawnee OK |
| 3OR0 | Pge Service Center Heliport | Portland OR |
| 3OR3 | Hessel Tractor Heliport | Portland OR |
| 3OR5 | Elkins Heliport | Salem OR |
| 3OR7 | Trojan Heliport | Rainier OR |
| 3OR8 | Cline Falls Air Park Airport | Redmond OR |
| 3OR9 | Murphy Ranch Airport | Juntura OR |
| 3P3 | Mott Muni Airport | Mott ND |
| 3PA0 | Horst Airport | Lebanon PA |
| 3PA2 | Philadelphia Gliderport | Hilltown PA |
| 3PA4 | Giffin Airport | Leraysville PA |
| 3PA5 | Davis Family Furniture Heliport | Adamsburg PA |
| 3PA6 | Fox Hollow Airport | Lewisburg PA |
| 3PA7 | Nason Hospital Heliport | Roaring Spring PA |
| 3PA8 | Harris Airport | Lincoln University PA |
| 3PA9 | Moyer Airport | Line Lexington PA |
| 3PN0 | Schulteis Airport | Biglerville PA |
| 3PN1 | Ashlawn Airport | Clifford PA |
| 3PN2 | Karlindo Airport | Fairfield PA |
| 3PN5 | H.g.f. Heliport | Allentown PA |
| 3PN6 | Gravel Run Airport | Cambridge Springs PA |
| 3PN7 | Stahl's Mountain Airport | Union Dale PA |
| 3PN8 | Wyeth Pharmaceuticals Heliport | Collegeville PA |
| 3PN9 | Phil Cain Memorial Field Ultralight | Export PA |
| 3PS0 | Chester County Hospital Heliport | West Chester PA |
| 3PS1 | Pitcairn Heliport | Bryn Athyn PA |
| 3PS2 | Chestnut Street Garage Heliport | Harrisburg PA |
| 3PS3 | Richard L Miller Heliport | Myerstown PA |
| 3PS4 | Mountain Hide-away Airport | Millcreek PA |
| 3PS5 | Shamokin Hospital Heliport | Shamokin PA |
| 3PS7 | Coxton Lake Heliport | Lakewood PA |
| 3PS8 | Yingst Airport | Harrisburg PA |
| 3PS9 | Risker Field Airport | Bulger PA |
| 3Q0 | Mina Airport | Mina NV |
| 3R2 | Le Gros Memorial Airport | Crowley LA |
| 3R4 | Hart Airport | Many LA |
| 3R7 | Jennings Airport | Jennings LA |
| 3R8 | Scottsburg Airport | Scottsburg IN |
| 3R9 | Lakeway Airpark Airport | Lakeway TX |
| 3RC | Roscommon Conservation Airport | Roscommon MI |
| 3RU | Rust Airstrip Airport | Woolsey GA |
| 3S2 | Swans Fld Airport | Dixfield ME |
| 3S4 | Illinois Valley Airport | Cave Junction OR |
| 3S5 | Schiffer Acres Airport | St Johns MI |
| 3S6 | Toketee State Airport | Clearwater OR |
| 3S7 | Nehalem Bay State Airport | Manzanita OR |
| 3S8 | Grants Pass Airport | Grants Pass OR |
| 3S9 | Condon State Pauling Fld Airport | Condon OR |
| 3SC2 | Yahu Field Airport | Summerton SC |
| 3SC3 | Carolina Pines Rgnl Medical Center Heliport | Hartsville SC |
| 3SC4 | Crooked Fence Farm Airport | Woodruff SC |
| 3SD3 | Brown Field Airport | Scenic SD |
| 3SD4 | Chris Hofer Landing Strip Airport | Tea SD |
| 3SD5 | Dilligaf Heliport | Lead SD |
| 3SD6 | Running Colors Airport | Rapid City SD |
| 3T0 | Cedar Mills Airport | Gordonville TX |
| 3T2 | Wolfe Air Park Airport | Manvel TX |
| 3T3 | Boyceville Muni Airport | Boyceville WI |
| 3T4 | Tetlin Airport | Tetlin AK |
| 3T5 | Fayette Rgnl Air Center Airport | La Grange TX |
| 3T6 | Clark Airport | Justin TX |
| 3T7 | Middle Bass Island Airport | Middle Bass Island OH |
| 3T8 | Wildcat Canyon Airport | China Spring TX |
| 3T9 | Big Bend Ranch State Park Airport | Presidio TX |
| 3TA | Stafford Muni Airport | Stafford KS |
| 3TA0 | Four Square Ranch Airport | Rocksprings TX |
| 3TA1 | Diamond K Ranch Airport | Comfort TX |
| 3TA2 | Clark Sky Ranch Airport | Sealy TX |
| 3TA3 | Baltzell's Las Brisas Heliport | Bandera TX |
| 3TA4 | Tin Top Ranch Airport | Brownwood TX |
| 3TA5 | Blanco Landing Airport | Blanco TX |
| 3TA6 | Spring Ranch Airport | Brackettville TX |
| 3TA7 | Jim Sears Airport | Bridgeport TX |
| 3TA8 | Picosa Ranch Airport | Crystal City TX |
| 3TA9 | Chacon Creek Ranch Airport | Crystal City TX |
| 3TE | Meyers-diver's Airport | Tecumseh MI |
| 3TE0 | K Ranch Airport | Iola TX |
| 3TE1 | Gum Island Airport | Dayton TX |
| 3TE2 | Texas Commerce Bank Building Heliport | Houston TX |
| 3TE4 | Hot Springs Airport | Ruidosa TX |
| 3TE5 | Stamps Field Airport | Panhandle TX |
| 3TE6 | Skellytown Airport | Skellytown TX |
| 3TE7 | Rolling V Ranch Heliport | Rhome TX |
| 3TE8 | C Fulcher Ranch Airport | Terlingua /alpine/ TX |
| 3TE9 | Pinoak Airport | Dayton TX |
| 3TN0 | Indian Springs Airport | Kingsport TN |
| 3TN1 | Methodist Hospital-north Heliport | Memphis TN |
| 3TN3 | Wayne's World Airport | Dresden TN |
| 3TN4 | Kenner Farm Airport | Seymour TN |
| 3TN5 | Wellmont Holston Valley Medical Center Heliport | Kingsport TN |
| 3TN6 | Wilson Field Airport | Memphis TN |
| 3TN7 | Pigeon Forge Heliport | Pigeon Forge TN |
| 3TN8 | Massingale Airport | Lenoir City TN |
| 3TN9 | Holenthawall Airport | Springfield TN |
| 3TR | Jerry Tyler Memorial Airport | Niles MI |
| 3TS0 | East Side Airport | Longview TX |
| 3TS1 | White Wings Airport | Wimberley TX |
| 3TS2 | West Hospital Authority Heliport | West TX |
| 3TS3 | J-d Ranch Airport | Alvin TX |
| 3TS4 | Intermedics Heliport | Angleton TX |
| 3TS6 | Lawrence Administrative Services Inc Heliport | Conroe TX |
| 3TS7 | Pavlat Airport | Dayton TX |
| 3TS8 | Dailey Inc Heliport | Houston TX |
| 3TS9 | Oak Glen Ranch Airport | Cooper TX |
| 3TX0 | Texas Dept. Of Public Safety Heliport | Corpus Christi TX |
| 3TX1 | Paradise Point Airport | Berryville TX |
| 3TX2 | Flying S Farm Airport | Justin TX |
| 3TX3 | Sitton Field Airport | Justin TX |
| 3TX5 | Mc Creless Farm Airport | Adkins TX |
| 3TX6 | Lowell Smith Jr Airport | Rio Vista TX |
| 3TX7 | Flying P Airport | Justin TX |
| 3TX8 | Drop Field Airport | Justin TX |
| 3TX9 | Rafter J Airport | Burleson TX |
| 3U0 | Murphy Hot Springs Airport | Three Creek ID |
| 3U1 | Warren /usfs/ Airport | Warren ID |
| 3U2 | Johnson Creek Airport | Yellow Pine ID |
| 3U3 | Bowman Field Airport | Anaconda MT |
| 3U4 | St Labre Mission Airport | Ashland MT |
| 3U5 | Augusta Airport | Augusta MT |
| 3U7 | Benchmark Airport | Augusta MT |
| 3U8 | Big Sandy Airport | Big Sandy MT |
| 3U9 | Boulder Airport | Boulder MT |
| 3UT6 | Riverton Hospital Heliport | Riverton UT |
| 3UT7 | Losee Villa Heliport | Heber City UT |
| 3V0 | Custer State Park Airport | Fairburn SD |
| 3VA0 | Ayres-aicp Airport | Warrenton VA |
| 3VA1 | The Meadows Airport | Warrenton VA |
| 3VA2 | Aviacres Airport | Warrenton VA |
| 3VA3 | Flying Circus Aerodrome Airport | Warrenton VA |
| 3VA4 | Shandy Hall Farm Airport | Warsaw VA |
| 3VA5 | Goose Hunt Farm Airport | Leesburg VA |
| 3VA6 | Beaver Lodge Estate Heliport | Somerville VA |
| 3VA7 | White Post Airport | White Post VA |
| 3VA8 | Garner Airport | Windsor VA |
| 3VA9 | Danville Life Saving Crew Heliport | Danville VA |
| 3VG2 | Machipongo Intl Airport | Machipongo VA |
| 3VG3 | Serenity Farm Airport | Burgess VA |
| 3VG4 | Knight's Landing Llc Airport | Virginia Beach VA |
| 3VG5 | Thomas Nelson Community College Heliport | Hampton VA |
| 3VG8 | Tucker Heliport | Chesapeake City VA |
| 3VG9 | Potts Landing Airport | South Boston VA |
| 3VS | Roy Otten Memorial Airfield Airport | Versailles MO |
| 3W2 | Put In Bay Airport | Put In Bay OH |
| 3W3 | Kentmorr Airpark Airport | Stevensville MD |
| 3W5 | Mears Field Airport | Concrete WA |
| 3W6 | Bladenboro Airport | Bladenboro NC |
| 3W7 | Grand Coulee Dam Airport | Electric City WA |
| 3W8 | Eureka Muni Airport | Eureka SD |
| 3W9 | Middle Bass-east Point Airport | Middle Bass Island OH |
| 3WA0 | Taylor Airport | Rainier WA |
| 3WA1 | Johnson's Landing Ultralight | Leavenworth WA |
| 3WA2 | Hanes Airport | Harrington WA |
| 3WA3 | Angel Park Airport | Kahlotus WA |
| 3WA4 | Watson Airport | Kahlotus WA |
| 3WA5 | Barnes Lonesome Polecat Ranch Heliport | Oak Harbor WA |
| 3WA6 | Boeing Kent Heliport | Kent WA |
| 3WA7 | Kent Benaroya Heliport | Kent WA |
| 3WA8 | Evergreen Hospital Heliport | Kirkland WA |
| 3WA9 | Sequim Ems Heliport | Sequim WA |
| 3WI0 | Carnot Field Airport | Algoma WI |
| 3WI1 | Olson's Airport | Union Grove WI |
| 3WI2 | Tesmer Airport | Waterloo WI |
| 3WI3 | Plover River Airfield Airport | Bevent WI |
| 3WI4 | Flying 'o' Airport | Wausau WI |
| 3WI5 | Clover Valley Airport | Whitewater WI |
| 3WI6 | Melin Farms Airport | Clinton WI |
| 3WI7 | Bark River Airport | Dousman WI |
| 3WI8 | Plantation Pine Airport | Redgranite WI |
| 3WI9 | Rosenbaum Field Airport | Chippewa Falls WI |
| 3WN2 | Old Dairy Airport | Washburn WI |
| 3WN3 | Kenosha County Heliport | Kenosha WI |
| 3WN4 | Mark's Park & Airfield Ultralight | New London WI |
| 3WN6 | Knutson Farms Airport | Chetek WI |
| 3WN7 | Woodland Airstrip Ultralight | Manitowoc WI |
| 3WN8 | Blunt Field Airport | Chippewa Falls WI |
| 3WN9 | Brion Memorial Airport | Strum WI |
| 3WV2 | Va Medical Center Heliport | Huntington WV |
| 3WV7 | United Medical Center Heliport | Bridgeport WV |
| 3X5 | North Bass Island Airport | North Bass Island OH |
| 3XA0 | Drennan Airport | Grandview TX |
| 3XA1 | Hardy Field Airport | Valley View TX |
| 3XA2 | Matagorda Rgnl Medical Center Heliport | Bay City TX |
| 3XA4 | Palmview Police Dept Heliport | Palmview TX |
| 3XA5 | Christus St. John Hospital Heliport | Nassau Bay TX |
| 3XA6 | Dell Children's Medical Center Heliport | Austin TX |
| 3XA7 | Eagle Rock Ranch Airport | Pontotoc TX |
| 3XA8 | Chicken Strip Airport | Cresson TX |
| 3XA9 | Mfs Sabine Pass Heliport | Sabine Pass TX |
| 3XS0 | Hartlee Field Airport | Denton TX |
| 3XS1 | Kubecka Aviation Airport | Palacios TX |
| 3XS2 | Citizens Medical Center Heliport | Victoria TX |
| 3XS3 | Victoria Bank & Trust Motor Garage Heliport | Victoria TX |
| 3XS4 | Jenkins Airport | Vidor TX |
| 3XS5 | Star Smith Field Airport | Von Ormy TX |
| 3XS6 | Good Shepherd Medical Center Heliport | Longview TX |
| 3XS7 | Bell Training Facility Heliport | Fort Worth TX |
| 3XS8 | Ken Ada Ranch Airport | Waller TX |
| 3XS9 | Comanche County Consolidated Hospital Dist Heliport | Comanche TX |
| 3Y2 | George L Scott Muni Airport | West Union IA |
| 3Y3 | Winterset Muni Airport | Winterset IA |
| 3Y4 | Woodbine Muni Airport | Woodbine IA |
| 3Y7 | Isabel Muni Airport | Isabel SD |
| 3Z1 | Feather River Airport | Feather River AK |
| 3Z8 | Golden Horn Lodge Seaplane Base | Golden Horn Lodge AK |
| 3Z9 | Haines Seaplane Base | Haines AK |
