Las Serpientes Airport Private
CN19 · Knightsen, CA · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 08:41 PM
| Event | Local (PDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:43 AM | 12:43Z |
| Sunrise | 06:12 AM | 13:12Z |
| Sunset | 08:13 PM | 03:13Z |
| Evening civil twilight Loggable night begins | 08:41 PM | 03:41Z |
Plan a flight from CN19
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 16LEFT traffic
- Heading
- 165° mag · 180° true
- Dimensions
- 1,900 × 75 ft
- TPA
- 1,000 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
Enter the left downwind (heading 345°) on the 45° at 1,000 ft MSL (≈1,000 AGL).
More details — RWY 16
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 16/34 | 1,900 ft |
Prefer one flat page? Full runway details for CN19 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the CN19 kneeboard →
Comms & NavAids
Nearby navigation aids
CCR 117.00 · SUU 116.60 · LIN 114.80 · +4
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| CCR · Concord | VOR/DME | 117.00 · 117X | Terminal | r091° / 21.5 NM |
| SUU · Travis | TACAN | 116.60 · 113X | — | r127° / 24.5 NM |
| LIN · Linden | VOR/DME | 114.80 · 95X | High | r237° / 30 NM |
| SAC · Sacramento | VORTAC | 115.20 · 99X | High | r168° / 30.8 NM |
| OAK · Oakland | VOR/DME | 116.80 · 115X | High | r050° / 31.5 NM |
| MOD · Modesto | VOR/DME | 114.60 · 93X | High | r284° / 36.1 NM |
| NUQ · Moffett | TACAN | 117.60 · 123X | — | r018° / 36.7 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for CN19 — open it on the VFR sectional →
Airport info
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 · 122.5 · 1-800-WX-BRIEF
- Attendance
- UNATNDD
- Segmented circle
- No
- Activated
- 2004/02
- Distance from city
- 2 SE
Ownership & management 2 contacts
Remarks FAA · 4 notes
General
- OWNER DESIRES ARPT NOT BE CHARTED.
- FOR CD CTC NORCAL APCH AT 916-361-0516.
Runways
- DSPLCD THLD RY 34 MARKED WITH WHITE BOARDS.
Contact
- CELL 925-698-4831; EMAIL CLEGGB@GMAIL.COM.
Nearby airports
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Also nearby: 4CA2 Funny Farm Airport (private) (2 NM) · C83 Byron Airport (6 NM) · CN95 Heritage Field Airport (private) (7 NM) · O20 Kingdon Airpark (15 NM) · O88 Rio Vista Municipal Airport (16 NM) · L53 Lodi Airpark (17 NM)
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 in the Comms & NavAids section.
What is the longest runway at CN19?
Las Serpientes Airport has 1 runway; the longest is 1,900 ft. See the Runways section 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.
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.