E41 Reagan County

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. No ADS-B traffic data available. No weather observation available.

certainty: — evidence: NONE no tower now

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16 26% 5035 ft · right traffic

34 26% 5035 ft

27 24% 4001 ft · right traffic

9 24% 4001 ft

Why — evidence behind this answer

Runway 16

PRIOR runway length 5035 ft +0.02

Runway 34

PRIOR runway length 5035 ft +0.02

Runway 27

PRIOR runway length 4001 ft -0.02

Runway 9

PRIOR runway length 4001 ft -0.02

Sources consulted

source	status	note
D_ATIS	UNAVAILABLE	No D-ATIS at this field
METAR	UNAVAILABLE	No weather observation found
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)

Was this right?

E41 field & runways

Reagan County, Big Lake, Texas. Field elevation 2706 ft. Non-towered (NON-ATCT). Magnetic variation 8.0°E on record, 5.1°E 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 0.077°/year west — about 1° every 13 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
16	169.4°	164.3°	matches rule gives runway 17 in ~9 yr	5,035 ft	ASPH	right
27	279.4°	274.3°	matches rule gives runway 28 in ~9 yr	4,001 ft	ASPH	right
34	349.4°	344.3°	matches rule gives runway 35 in ~9 yr	5,035 ft	ASPH
9	99.4°	94.3°	matches rule gives runway 10 in ~9 yr	4,001 ft	ASPH

Generated 10:19:50Z · auto-refreshes · JSON

E41 ☆ Reagan County