KGCN Grand Canyon Ntl Park

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. Weather observation is 10520 minutes old — treat with caution. Wind calm — no directional preference.

certainty: — evidence: NONE Class D

Wind calm · VFR · 10520 min old

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21 50% 8999 ft · right traffic

3 50% 8999 ft

Why — evidence behind this answer

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	10520 min
ADSB	UNAVAILABLE		No ADS-B track history here yet
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

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

Was this right?

KGCN field & runways

Grand Canyon Ntl Park, Grand Canyon, Arizona. Field elevation 6609 ft. Class D airspace. Towered. Magnetic variation 11.0°E on record, 10.0°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 0.08°/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.
Runway	True	Magnetic	Number	Length	Surface	Pattern	Notes
21	220.5°	210.5°	matches rule gives runway 22 in ~56 yr	8,999 ft	ASPH	right
3	40.5°	30.5°	matches rule gives runway 4 in ~56 yr	8,999 ft	ASPH		ILS

Generated 09:13:32Z · auto-refreshes · JSON