runwayinuse

81D Flyin Tiger

?
UNKNOWN

Unknown — not enough evidence to call a runway

We don't know, and saying so beats guessing. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available. No weather observation available.

certainty: — evidence: NONE no tower now

N 16 34 17 35

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16 25% 2261 ft
17 25% 2200 ft
34 25% 2261 ft
35 25% 2200 ft
Why — evidence behind this answer

Sources consulted

sourcestatus agenote
D_ATISUNAVAILABLE No D-ATIS at this field
METARUNAVAILABLE No weather observation found
ADSBUNAVAILABLE No ADS-B track history here yet
NOTAMERROR NOTAM source unreachable
CIFPNOT_CONFIGURED Instrument procedures: phase 4

Recent operations

No operations observed in the last hour. (No ADS-B track history here yet)

Was this right?

81D field & runways

Flyin Tiger, Angleton, Texas. Field elevation 30 ft. Non-towered (NON-ATCT). Magnetic variation 6.0°E on record, 1.7°E today.

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 0.081°/year west — about 1° every 12 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
16 163.4° 161.6° matches rule gives runway 17 in ~42 yr 2,261 ft TURF
17 178.2° 176.5° runway 18 by the rule today · 6.5° past 2,200 ft TURF
34 343.4° 341.6° matches rule gives runway 35 in ~42 yr 2,261 ft TURF
35 358.2° 356.5° runway 36 by the rule today · 6.5° past 2,200 ft TURF

Generated 11:17:56Z · auto-refreshes · JSON