X21 Arthur Dunn Air Park

PROBABLE 68%

Runway 15 — 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: 68% evidence: WEAK no tower now

Wind 100° true at 9 kt · MVFR · 49 min old · from KCOF (25.8 nm away)

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

15 62% 3026 ft · 6 kt head, 7 kt x-left

4 35% 1805 ft · 3 kt head, 8 kt x-right

22 3% 1805 ft · 3 kt TAIL, 8 kt x-left

33 <1% 3026 ft · 6 kt TAIL, 7 kt x-right

Why — evidence behind this answer

Runway 15

WIND 6 kt headwind, 7 kt left crosswind 49 min ago +0.84
PRIOR runway length 3026 ft +0.05

Runway 4

WIND 3 kt headwind, 8 kt right crosswind 49 min ago +0.37
PRIOR runway length 1805 ft -0.05

Runway 22

WIND 3 kt TAILWIND, 8 kt left crosswind 49 min ago -1.98
PRIOR runway length 1805 ft -0.05

Runway 33

WIND 6 kt TAILWIND, 7 kt right crosswind 49 min ago -4.76
PRIOR runway length 3026 ft +0.05

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	49 min	Nearest station KCOF (25.8 nm away)
ADSB	WARMING_UP	1186 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)

Was this right?

X21 field & runways

Arthur Dunn Air Park, Titusville, Florida. Field elevation 30 ft. Non-towered (NON-ATCT). Magnetic variation 5.0°W on record, 7.3°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 0.073°/year west — about 1° every 14 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
15	149.1°	156.4°	runway 16 by the rule today · 6.4° past	3,026 ft	ASPH	left
22	212.1°	219.4°	matches	1,805 ft	TURF
33	329.1°	336.4°	runway 34 by the rule today · 6.4° past	3,026 ft	ASPH	left
4	32.1°	39.4°	matches	1,805 ft	TURF

Generated 09:13:50Z · auto-refreshes · JSON

X21 ☆ Arthur Dunn Air Park