Las Serpientes Airport Private
CN19 · Knightsen, CA · 10 ft elevation · var 15E · Non-towered
Airport information
- FAA LID
- CN19
- Coordinates
- 37.9331, -121.6130
- Elevation
- 10 ft MSL
- Magnetic variation
- 15E
- Sectional chart
- SAN FRANCISCO
- Airport use
- Private
- Control tower
- No
- ARTCC
- OAKLAND (ZOA)
- Flight service (FSS)
- OAKLAND
- Attendance
- UNATNDD
- Segmented circle
- No
- Activated
- 2004/02
- Distance from city
- 2 SE
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 CN19
Traffic pattern
- Landing
- Rwy 16
- Pattern
- left (turns left)
- TPA
- 1,000 ft MSL (≈1,000 AGL)
Enter the left downwind for Rwy 16 at 1,000 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 16/34
1,900 ft × 75 ft · Turf- Heading
- n/a
- Traffic pattern
- Left
- Heading
- 300° mag · 315° true
- Traffic pattern
- Left
- Approach obstacle
- Berm, 10 ft, 50 ft from threshold
- Displaced threshold
- 200 ft
| Runway | Length | Your margin |
|---|---|---|
| 16/34 | 1,900 ft |
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| CCR · Concord | VOR-DME | 117.00 | r091° / 21.5 NM |
| ECA · Manteca | VORTAC | 116.00 | r269° / 21.8 NM |
| SUU · Travis | TACAN | 116.60 | r123° / 24.5 NM |
| TZZ · Travis | VOR | 116.40 | r142° / 26.4 NM |
| LIN · Linden | VORTAC | 114.80 | r237° / 30 NM |
| SAC · Sacramento | VORTAC | 115.20 | r168° / 30.8 NM |
| OAK · Oakland | VORTAC | 116.80 | r050° / 31.5 NM |
VFR sectional
No published instrument procedures or Chart Supplement for CN19. VFR sectional link above.
Ownership & management
Remarks FAA
- PROVIDED VFR OPNS, PRIVATE USE, OBSTRUCTION FREE INGRESS AND EGRESS AND ALL OPNS CONDUCTED IN ACCORDANCE WITH THE OVERLYING CLASS OF AIRSPACE.
- OWNER DESIRES ARPT NOT BE CHARTED.
- FOR CD CTC NORCAL APCH AT 916-361-0516.
- CELL 925-698-4831; EMAIL CLEGGB@GMAIL.COM.
- DSPLCD THLD RY 34 MARKED WITH WHITE BOARDS.
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 CN19 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 CN19
Las Serpientes Airport (CN19) is an airport in Knightsen, CA, at 10 ft MSL. It has 1 runway, the longest 1,900 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for CN19, refreshed from the Aviation Weather Center and FAA NASR.
Does CN19 have a control tower?
No. Las Serpientes Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at CN19?
Las Serpientes Airport has 1 runway; the longest is 1,900 ft. See the Runways tab for headings, surface, and lighting.
Where is CN19?
Las Serpientes Airport is in Knightsen, CA, at an elevation of 10 ft MSL. Coordinates: 37.9331, -121.6130.
Fly out of CN19 often?
Save CN19 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.