Benchmark Airport (3U7)

Location & QuickFacts

FAA Information Effective	2026-07-09
Airport Identifier	3U7
Airport Status	Operational
Longitude/Latitude	112°52'20.3000" W / 47°28'55.3000" N -112.872306 / 47.482028 (Estimated)
Elevation	5434.00 ft / 1656.28 m (Estimated)
Land	145 acres
From nearest city	19 nautical miles W of Augusta, MT
Location	Lewis And Clark County, MT
Magnetic Variation	18E (1985)

Owner & Manager

Ownership	Publicly owned
Owner	U S FOREST SERVICE
Address	LEWIS & CLARK NATNL FOREST CHOTEAU, MT 59422
Phone number	406-791-7700
Manager	BJORN TROBERG
Address	HELENA & LEWIS & CLARK NAT FORESTS 2880 SKYWAY DRIVE HELENA, MT 59602
Phone number	(406) 495-3832

Airport Operations and Facilities

Airport Use	Open to public
Wind indicator	Yes
Segmented Circle	Yes
Control Tower	NON-ATCT
Landing fee charge	No
Sectional chart	GREAT FALLS
Region	ANM - Northwest Mountain
Responsible ARTCC	ZLC - SALT LAKE CITY
Tie-in FSS	GTF - GREAT FALLS
FSS on Airport	No
FSS Toll Free	1-800-WX-BRIEF
NOTAMs Facility	GTF (NOTAM-d service available)

Airport Communications

CTAF

122.9 MHz

Airport Services

Transient storage

Hangar, Tiedown

Runway Information

Runway 12/30

Dimensions	6000 x 100 ft (1829 x 30 m)
Surface	ASPH (POOR)
Surface treatment

	12	30
Alignment	140°	320°
Physical elevation	5316.00 ft	5434.00 ft
Coordinates	47.488325 / -112.880141	47.475755 / -112.864481
Traffic pattern	Left	Left
Runway marking	Basic , Fair Condition	Basic , Fair Condition

Remarks

• SNOW REMOVAL NA.
• MTS PARL E & W; IN TRSN SFC.
• SVCS NA.
• FONE NA; CABIN 1 MI NW.
• FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.