KHEF Washington Manassas/Harry P Davis 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. Wind calm — no directional preference.

certainty: — evidence: NONE Class D

Wind calm · VFR · 47 min old · from KADW (31.0 nm away)

▶ Listen live — ATIS/CTAF on LiveATC opens LiveATC’s own player · verify the broadcast yourself

16L 26% 6200 ft

34R 26% 6200 ft · right traffic

16R 24% 3715 ft · right traffic

34L 24% 3715 ft

Active NOTAMs affecting runways

LIGHTING RWY 16L until 11-06 23:00Z

AD AP WINDCONE FOR RWY 16L LGT U/S

Why — evidence behind this answer

Runway 16L

PRIOR runway length 6200 ft +0.05

Runway 34R

PRIOR runway length 6200 ft +0.05

Runway 16R

PRIOR runway length 3715 ft -0.05

Runway 34L

PRIOR runway length 3715 ft -0.05

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	47 min	Nearest station KADW (31.0 nm away)
ADSB	OK	1 min	GOOD
NOTAM	OK
CIFP	NOT_CONFIGURED		Instrument procedures: phase 4

Recent operations

No operations observed in the last hour.

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KHEF field & runways

Washington Manassas/Harry P Davis Fld, Washington, Dist. Of Columbia. Field elevation 192 ft. Class D airspace. Towered. Magnetic variation 10.0°W on record, 10.4°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 0.004°/year east — about 1° every 250 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
16L	150.7°	161.1°	matches	6,200 ft	ASPH		ILS
16R	150.7°	161.1°	matches	3,715 ft	ASPH	right
34L	330.7°	341.1°	matches	3,715 ft	ASPH	left
34R	330.7°	341.1°	matches	6,200 ft	ASPH	right

What KHEF usually does

Of 2,065 operations this service has observed at KHEF since 2026-08-25:

34R 41% 838 ops
16L 27% 559 ops
34L 20% 413 ops
16R 12% 255 ops

Observed by this service only — not an FAA statistic, and biased toward the hours and days it has been watching. It is shown because it is the same history the engine learns its local-convention prior from.

Generated 08:41:52Z · auto-refreshes · JSON

KHEF ☆ Washington Manassas/Harry P Davis Fld