18TE · Alert Field

BIG SANDY, TEXAS · SMALL AIRPORT

390

Elevation ft

Runway

5,093

Longest ft · 08/26

32.59N

95.06W

Alert Field serves Big Sandy, Texas at 390 ft elevation with its longest runway, 08/26, at 5,093 by 45 ft. The figures below are computed from FAA NASR runway data (via OurAirports) and the same rules of thumb JetDesk uses on the airport page in the app; the POH and current NOTAMs are the authority.

Private-use airfield. The FAA file marks this field private use. It is listed here for reference. Landing needs the owner's prior permission, and there may be no fuel or services. Do not plan it as a fuel stop or a routine alternate.

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01Runways

Runway	Length × width	Surface	Lighting
08/26	5,093 × 45 ft	asphalt (good)	lit

02Density altitude and turboprop runway margins

Standard temperature at 390 ft is about 14°C. Every 1,000 ft of density altitude adds roughly 8 percent to a turboprop's takeoff distance and 5 percent to its landing distance. The table uses Piper Meridian book numbers (2,438 ft takeoff and 2,110 ft landing over a 50 ft obstacle at sea level, ISA, max weight) as a reference airplane; heavier turboprops and light jets scale the same way from their own POH figures.

Conditions	Density altitude	Takeoff est.	Landing est.	Landing × 1.5
Standard day (ISA, 14°C)	390 ft	2,514 ft	2,151 ft	3,227 ft
Warm day (ISA +10)	1,590 ft	2,748 ft	2,278 ft	3,417 ft
Hot day (ISA +20)	2,790 ft	2,982 ft	2,404 ft	3,607 ft
35°C afternoon	2,884 ft	3,000 ft	2,414 ft	3,621 ft

Planning aid only. Even on a 35°C afternoon the longest runway (08/26, 5,093 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,621 ft needed). The percentages are a generic rule of thumb applied to one reference airplane, not certified performance data for any specific aircraft, and the runway size categories describe the runway, not your airplane's suitability. Verify with the approved flight manual before every flight.

03Nearby fields with 5,000 ft or more

Listed for reference only: 18TE is not a field to divert to or buy fuel at.

Airport	Distance	Longest runway
KGGG East Texas Regional Airport	22 nm SE	10,000 ft
KTYR Tyler Pounds Regional Airport	22 nm SW	8,334 ft
KOSA Mount Pleasant Regional Airport	31 nm N	6,004 ft
KASL Harrison County Airport	38 nm E	5,002 ft
KJSO Cherokee County Airport	44 nm S	5,006 ft
KSLR Sulphur Springs Municipal Airport	44 nm NW	5,001 ft

04Fuel and services at 18TE

There is no public FBO fuel to log at 18TE. JetDesk collects Jet A prices that pilots actually paid, at civil fields, and its route finder leaves military and private-use fields out of every ranking. Read what a fuel stop actually saves.

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