runwayinuse

3NJ9 Allen Airstrip

31
PROBABLE 67%

Runway 31 — wind slightly favors it, low confidence

Based mostly on wind; no traffic or ATIS to confirm. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. ADS-B tracking just started here — traffic history is still building.

certainty: 67% evidence: WEAK no tower now

N 31 13

Wind 020° true at 8 kt · VFR · 13 min old · from KPHL (21.4 nm away)

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31 68% 1965 ft · 1 kt head, 8 kt x-right
13 32% 1965 ft · 1 kt TAIL, 8 kt x-left · right traffic
Why — evidence behind this answer

Runway 31

Runway 13

Sources consulted

sourcestatus agenote
D_ATISUNAVAILABLE No D-ATIS at this field
METAROK 13 min Nearest station KPHL (21.4 nm away)
ADSBWARMING_UP 3930 min Only 0 min of track history so far
NOTAMOK
CIFPNOT_CONFIGURED Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (Only 0 min of track history so far)

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3NJ9 field & runways

Allen Airstrip, Vincentown, New Jersey. Field elevation 51 ft. Non-towered (NON-ATCT). Private use.

The FAA's variation of record is the number this field was surveyed against; the second is where north points now, from WMM2025. It is moving 0.029°/year east — about 1° every 34 years — which is why runway numbers eventually stop matching their pavement.

Runway data from the FAA NASR 01 Oct 2026 cycle. Where NASR locates both thresholds, the true heading is the bearing between them rather than NASR's whole-degree alignment. Magnetic is that heading against today's declination from WMM2025, not the field's variation of record — so it can differ from the chart by the gap between the two shown above. The number painted on the runway is the one ATC uses.
RunwayTrueMagnetic Number LengthSurfacePattern Notes
13 119.0° 131.0° matches 1,965 ft TURF right
31 299.0° 311.0° matches 1,965 ft TURF

Generated 13:07:24Z · auto-refreshes · JSON