Mysterious Valley Airport (20CL)

Location & QuickFacts

FAA Information Effective	2026-07-09
Airport Identifier	20CL
Airport Status	Operational
Longitude/Latitude	122°22'2.9220" W / 38°44'57.6490" N -122.367478 / 38.749347 (Estimated)
Elevation	1410.00 ft / 429.77 m (Estimated)
Land	10 acres
From nearest city	9 nautical miles N of Pope Valley, CA
Location	Napa County, CA
Magnetic Variation	16E (1985)

Owner & Manager

Ownership	Privately owned
Owner	PERRY CLARK
Address	AMIZETTA WINERY 1099 GREENFIELD RD ST HELENA, CA 94574

Airport Operations and Facilities

Airport Use	Private
Wind indicator	Yes
Segmented Circle	No
Control Tower	NON-ATCT
Landing fee charge	No
Sectional chart	SAN FRANCISCO
Region	AWP - Western-Pacific
Responsible ARTCC	ZOA - OAKLAND
Tie-in FSS	OAK - OAKLAND
FSS on Airport	No
FSS Toll Free	1-800-WX-BRIEF

Airport Services

Airframe repair	NONE
Power plant repair	NONE

Runway Information

Runway 14/32

Dimensions	3500 x 30 ft (1067 x 9 m)
Surface	GRVL
Surface treatment

	14	32
Traffic pattern	Left	Left

Radio Navigation Aids

ID	Type	Name	Ch	Freq	Var	Dist
STS	DME	SANTA ROSA	108Y	116.15		25.4 nm
SUU	TACAN	TRAVIS	113X	116.60	13E	36.2 nm
BAB	TACAN	BEALE	23X	108.60	16E	49.1 nm
MYV	VOR/DME	MARYSVILLE	45X	110.80	16E	42.7 nm
CCR	VOR/DME	CONCORD	117X	117.00	17E	45.0 nm
MCC	VOR/DME	MC CLELLAN	29X	109.20	17E	45.5 nm
PYE	VOR/DME	POINT REYES	84X	113.70	17E	46.6 nm
ILA	VORTAC	WILLIAMS	91X	114.40	18E	25.0 nm
SGD	VORTAC	SCAGGS ISLAND	58X	112.10	17E	34.3 nm
SAC	VORTAC	SACRAMENTO	99X	115.20	17E	42.5 nm
ENI	VORTAC	MENDOCINO	70X	112.30	16E	46.2 nm
SMF	VOT	SACRAMENTO INTL		111.40		36.6 nm
SAC	VOT	SACRAMENTO EXECUTIVE		111.40		43.5 nm

Remarks

• HAZARDOUS STRIP-SURROUNDED BY HILLS, 95 FT FENCE TO FENCE.
• FOR CD CTC OAKLAND ARTCC AT 510-745-3380.
• FORM 7480-1 SUBMITTED FOR RECORDS.