Airport information
- FAA LID
- 4CA2
- Coordinates
- 37.9469, -121.6470
- Elevation
- 29 ft MSL
- Magnetic variation
- 16E
- Sectional chart
- SAN FRANCISCO
- Airport use
- Private
- Control tower
- No
- ARTCC
- OAKLAND (ZOA)
- Flight service (FSS)
- OAKLAND
- Attendance
- ALL DALGT
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1999/09
- Distance from city
- 3 NE
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-21
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:13 AM | 12:13Z |
| Sunrise | 05:44 AM | 12:44Z |
| Sunset | 08:32 PM | 03:32Z |
| Evening civil twilight Loggable night begins | 09:04 PM | 04:04Z |
Plan a flight from 4CA2
Traffic pattern
- Landing
- Rwy 17
- Pattern
- right (turns right)
- TPA
- 1,000 ft MSL (≈1,000 AGL)
Enter the right downwind for Rwy 17 at 1,000 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 17/35
1,880 ft × 20 ft · Asphalt- Heading
- n/a
- Traffic pattern
- Right
- Approach obstacle
- Trees, 50 ft, 100 ft from threshold
- Heading
- n/a
- Traffic pattern
- Left
- Approach obstacle
- Trees, 50 ft, 100 ft from threshold
| Runway | Length | Your margin |
|---|---|---|
| 17/35 | 1,880 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| CCR · Concord | VOR-DME | 117.00 | r090° / 19.7 NM |
| SUU · Travis | TACAN | 116.60 | r125° / 22.8 NM |
| ECA · Manteca | VORTAC | 116.00 | r270° / 23.6 NM |
| TZZ · Travis | VOR | 116.40 | r145° / 25.1 NM |
| SAC · Sacramento | VORTAC | 115.20 | r172° / 30.2 NM |
| OAK · Oakland | VORTAC | 116.80 | r047° / 30.4 NM |
| LIN · Linden | VORTAC | 114.80 | r239° / 31.4 NM |
VFR sectional
No published instrument procedures or Chart Supplement for 4CA2. VFR sectional link above.
Ownership & management
Remarks FAA
- PROVIDED VFR, PRIVATE USE, OBSTRUCTION FREE INGRESS/EGRESS.
- 100 FT WATER TOWER 2.5 MILES SW OF ARPT.
- FOR CD CTC NORCAL APCH AT 916-361-0516.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 4CA2 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
About 4CA2
Funny Farm Airport (4CA2) is an airport in Brentwood, CA, at 29 ft MSL. It has 1 runway, the longest 1,880 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 4CA2, refreshed from the Aviation Weather Center and FAA NASR.
Does 4CA2 have a control tower?
No. Funny Farm Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 4CA2?
Funny Farm Airport has 1 runway; the longest is 1,880 ft. See the Runways tab for headings, surface, and lighting.
Where is 4CA2?
Funny Farm Airport is in Brentwood, CA, at an elevation of 29 ft MSL. Coordinates: 37.9469, -121.6470.
Fly out of 4CA2 often?
Save 4CA2 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.