Funny Farm Private
4CA2 · Brentwood, CA · Non-towered · Print kneeboard · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-20 · night begins 07:33 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:26 AM | 13:26Z |
| Sunrise | 06:52 AM | 13:52Z |
| Sunset | 07:07 PM | 02:07Z |
| Evening civil twilight Loggable night begins | 07:33 PM | 02:33Z |
Plan a flight from 4CA2
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
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Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
RWY 17RIGHT trafficRP · charted
- Heading
- 170° mag · 186° true
- Dimensions
- 1,880 × 20 ft
- TPA
- 1,000 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
Enter the right downwind (heading 350°) on the 45° at 1,000 ft MSL (≈1,000 AGL).
More details — RWY 17
- Approach obstacle
- Trees, 50 ft, 100 ft from threshold
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)
| Runway | Length | Your margin |
|---|---|---|
| 17/35 | 1,880 ft |
Prefer one flat page? Full runway details for 4CA2 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 4CA2 kneeboard →
Comms & NavAids
Nearby navigation aids
CCR 117.00 · SUU 116.60 · SAC 115.20 · +4
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| CCR · Concord | VOR/DME | 117.00 · 117X | Terminal | r090° / 19.7 NM |
| SUU · Travis | TACAN | 116.60 · 113X | — | r129° / 22.8 NM |
| SAC · Sacramento | VORTAC | 115.20 · 99X | High | r172° / 30.2 NM |
| OAK · Oakland | VOR/DME | 116.80 · 115X | High | r047° / 30.4 NM |
| LIN · Linden | VOR/DME | 114.80 · 95X | High | r239° / 31.4 NM |
| NUQ · Moffett | TACAN | 117.60 · 123X | — | r015° / 36.5 NM |
| SGD · Scaggs Island | VORTAC | 112.10 · 58X | Low | r095° / 37 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for 4CA2 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 4CA2
- Coordinates
- 37.9469, -121.6475
- Elevation
- 29 ft MSL
- Magnetic variation
- 16E
- Sectional chart
- SAN FRANCISCO
- Airport use
- Private
- Control tower
- No
- ARTCC
- OAKLAND (ZOA)
- Flight service (FSS)
- OAKLAND · 1-800-WX-BRIEF
- Attendance
- ALL DALGT
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1999/09
- Distance from city
- 3 NE
Ownership & management 2 contacts
Remarks FAA · 2 notes
General
- 100 FT WATER TOWER 2.5 MILES SW OF ARPT.
- FOR CD CTC NORCAL APCH AT 916-361-0516.
Nearby airports
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Also nearby: CN19 Las Serpientes (private) (2 NM) · C83 Byron (7 NM) · CN95 Heritage Field (private) (8 NM) · O88 Rio Vista Municipal (15 NM) · O20 Kingdon Airpark (16 NM) · 9CL9 Spezia (private) (17 NM)
About 4CA2
Funny Farm (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 is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 4CA2?
Funny Farm has 1 runway; the longest is 1,880 ft. See the Runways section for headings, surface, and lighting.
Where is 4CA2?
Funny Farm is in Brentwood, CA, at an elevation of 29 ft MSL. Coordinates: 37.9469, -121.6475.
More about 4CA2
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.
Something here wrong or out of date? Report a data problem.