Funny Farm Airport (4CA2) — Brentwood, CA

Location & QuickFacts

FAA Information Effective	2026-09-03
Airport Identifier	4CA2
Airport Status	Operational
Longitude/Latitude	121°38'50.8300" W / 37°56'48.7200" N -121.647453 / 37.946867 (Estimated)
Elevation	29.00 ft / 8.84 m (Estimated)
Land	20 acres
From nearest city	3 nautical miles NE of Brentwood, CA
Location	Contra Costa County, CA
Magnetic Variation	16E (1995)

Owner & Manager

Ownership	Privately owned
Owner	DAVID S. BEHNE
Address	2651 PENNY LN BRENTWOOD, CA 94513-5234
Phone number	(925) 580-1433
Manager	ERIC BEHNE
Address	2651 PENNY LN BRENTWOOD, CA 94513-5234
Phone number	(925) 580-1433

Airport Operations and Facilities

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

Runway Information

Runway 17/35

Dimensions	1880 x 20 ft (573 x 6 m)
Surface	ASPH
Surface treatment

	17	35
Traffic pattern	Right	Left

Radio Navigation Aids

ID	Type	Name	Ch	Freq	Var	Dist
SUU	TACAN	TRAVIS	113X	116.60	13E	22.8 nm
NUQ	TACAN	MOFFETT	123X	117.60	17E	36.6 nm
CCR	VOR/DME	CONCORD	117X	117.00	17E	19.7 nm
OAK	VOR/DME	OAKLAND	115X	116.80	17E	30.4 nm
LIN	VOR/DME	LINDEN	95X	114.80	17E	31.4 nm
SJC	VOR/DME	SAN JOSE	88X	114.10	16E	37.2 nm
MOD	VOR/DME	MODESTO	93X	114.60	17E	38.0 nm
SFO	VOR/DME	SAN FRANCISCO	105X	115.80	17E	39.7 nm
SAU	VOR/DME	SAUSALITO	109X	116.20	17E	41.9 nm
MCC	VOR/DME	MC CLELLAN	29X	109.20	17E	44.8 nm
OSI	VOR/DME	WOODSIDE	86X	113.90	17E	44.9 nm
SAC	VORTAC	SACRAMENTO	99X	115.20	17E	30.2 nm
SGD	VORTAC	SCAGGS ISLAND	58X	112.10	17E	37.1 nm
SAC	VOT	SACRAMENTO EXECUTIVE		111.40		34.6 nm
SFO	VOT	SAN FRANCISCO		111.00		39.4 nm
SMF	VOT	SACRAMENTO INTL		111.40		44.8 nm

Remarks

• 100 FT WATER TOWER 2.5 MILES SW OF ARPT.
• FOR CD CTC NORCAL APCH AT 916-361-0516.
• PROVIDED VFR, PRIVATE USE, OBSTRUCTION FREE INGRESS/EGRESS.