Marin County Airport - Gnoss Field traffic pattern
Pattern altitude at Marin County Airport - Gnoss Field (DVO · KDVO · NOT) is 1,000 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 31 is charted right traffic.
All of Marin County Airport - Gnoss Field — runways, frequencies, charts and live weatherPattern diagram
Drawn to scale from the FAA NASR runway alignments and the per end right traffic flags — pick a runway to see its pattern. Live wind picks the favored runway when KDVO reports it.
RWY 13LEFT traffic
- Heading
- 134° mag · 150° true
- Dimensions
- 3,303 × 75 ft
- TPA
- 1,000 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- Lights
- 2-light PAPI (right) (3.5°)
- CTAF
- 123.075
Enter the left downwind (heading 314°) on the 45° at 1,000 ft MSL (≈1,000 AGL).
More details — RWY 13
- Threshold elev
- 4 ft
- Markings
- nonprecision
- Approach obstacle
- Tree, 82 ft, 3,000 ft from threshold, 0 ft B of centerline — 34:1 slope to clear
- Threshold crossing height
- 28 ft
- TDZ elevation
- 4 ft
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
Pattern direction by runway
| Runway | Pattern | Heading | Pattern altitude |
|---|---|---|---|
| 13 | Left traffic | 134° mag | 1,000 ft MSL (≈1,000 AGL) |
| 31 | Right traffic | 314° mag | 1,000 ft MSL (≈1,000 AGL) |
No pattern altitude is published for KDVO; the figure above is the AC 90-66B 1,000 ft AGL convention for propeller aircraft, rounded to the field. Turbine aircraft normally fly 1,500 ft AGL. Headings are the runway alignment; downwind is the reciprocal.
Flying the pattern at KDVO
Marin County Airport - Gnoss Field is non towered, so the pattern is self announced on CTAF 123.075. AC 90-66B asks for a report on entry and on each leg, and for the standard 45° entry to downwind at pattern altitude.
Watch the right traffic ends here: 31. A right pattern at a field where the other end is left is the single most common place to end up pointing at opposing traffic. The full entry procedure is here →
Frequently asked
What is the traffic pattern altitude at KDVO?
Marin County Airport - Gnoss Field has no traffic pattern altitude published in the FAA NASR data. The AC 90-66B convention for propeller aircraft is 1,000 ft AGL, which works out to roughly 1,000 ft MSL (≈1,000 AGL) here — but confirm it against the Chart Supplement before you fly, since a field can have a non standard pattern altitude that NASR does not carry.
Does KDVO have right traffic?
Yes, on one runway end: 31. Every other end at Marin County Airport - Gnoss Field is standard left traffic.
What frequency is the pattern on at KDVO?
Marin County Airport - Gnoss Field is non towered, so pattern position reports go on the CTAF, 123.075. AC 90-66B asks for self announcing on entry and on each leg.
More about KDVO
Pattern direction and alignment are drawn from the FAA NASR (28-day cycle); the diagram is generated, not an FAA chart. Pattern altitude is shown as published where NASR carries one, otherwise as the AC 90-66B 1,000 ft AGL convention. For planning and education only; always verify against the Chart Supplement.