KGYH Donaldson Fld

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. ADS-B tracking just started here — traffic history is still building. Wind calm — no directional preference.

certainty: — evidence: NONE Class D

Wind calm · VFR · 46 min old · from KAND (22.7 nm away)

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23 50% 8000 ft

5 50% 8000 ft · right traffic

Active NOTAMs affecting runways

LIGHTING RWY 23 until 12-22 23:59Z

RWY 23 PAPI U/S

LIGHTING RWY 5 until 12-22 23:59Z

RWY 05 PAPI U/S

Why — evidence behind this answer

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	46 min	Nearest station KAND (22.7 nm away)
ADSB	WARMING_UP	1265 min	Only 0 min of track history so far
NOTAM	OK
CIFP	NOT_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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KGYH field & runways

Donaldson Fld, Greenville, South Carolina. Field elevation 956 ft. Class D airspace. Towered. Magnetic variation 7.0°W on record, 7.0°W 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 0.046°/year west — about 1° every 22 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
23	219.8°	226.9°	matches	8,000 ft	CONC	left
5	39.9°	46.9°	matches	8,000 ft	CONC	right	ILS

Generated 08:42:02Z · auto-refreshes · JSON

KGYH ☆ Donaldson Fld