LS40 St Charles

PROBABLE 60%

No runway-in-use estimate is possible here

The FAA's NASR data publishes no runway alignment for this field, so there is nothing to compute a wind component against and no way to tell which end an aircraft used. What is known about the field is below.

No D-ATIS feed here — a voice ATIS/AWOS may exist; check the frequency. No ADS-B traffic data available.

certainty: 60% evidence: WEAK no tower now

Wind 040° true at 12 kt G19 · VFR · 25 min old · from KMSY (2.8 nm away)

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17 50% 3900 ft

35 50% 3900 ft

Why — evidence behind this answer

Sources consulted

source	status	age	note
D_ATIS	UNAVAILABLE		No D-ATIS at this field
METAR	OK	25 min	Nearest station KMSY (2.8 nm away)
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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LS40 field & runways

St Charles, Ama, Louisiana. Field elevation 13 ft. Non-towered (NON-ATCT). Private use. Magnetic variation 3.0°E on record, 1.4°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 0.081°/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
17	not published		—	3,900 ft	TURF
35	not published		—	3,900 ft	TURF

Generated 10:18:20Z · auto-refreshes · JSON