KBFA Boyne Mountain

WIND_INFERRED 90%

Runway 17 — favored by the wind (10 kt at 180° true)

Based on wind only — no traffic or ATIS to confirm. No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available.

certainty: 90% evidence: WEAK no tower now

Wind 180° true at 10 kt · VFR · 5 min old

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17 99% 5187 ft · 10 kt head, 2 kt x-right

35 <1% 5187 ft · 10 kt TAIL, 2 kt x-left

Active NOTAMs affecting runways

LIGHTING RWY 35 until 03-08 21:11Z

RWY 35 PAPI UNUSABLE

Why — evidence behind this answer

Runway 17

WIND 10 kt headwind, 2 kt right crosswind 5 min ago +2.30

Runway 35

WIND 10 kt TAILWIND, 2 kt left crosswind 5 min ago -16.39

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	5 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)

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KBFA field & runways

Boyne Mountain, Boyne Falls, Michigan. Field elevation 719 ft. Non-towered (NON-ATCT). Magnetic variation 6.0°W on record, 6.6°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 0.007°/year east — about 1° every 143 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
17	169.3°	175.9°	runway 18 by the rule today · 5.9° past	5,187 ft	ASPH	left
35	349.3°	355.9°	runway 36 by the rule today · 5.9° past	5,187 ft	ASPH	left

Generated 08:39:50Z · auto-refreshes · JSON

KBFA ☆ Boyne Mountain