KNJW · Joe Williams Naval Outlying Field

PRESTON, MISSISSIPPI · SMALL AIRPORT

539

Elevation ft

Runway

7,976

Longest ft · 13/31

32.80N

88.83W

Joe Williams Naval Outlying Field serves Preston, Mississippi at 539 ft elevation with its longest runway, 13/31, at 7,976 by 150 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.

Military airfield. This is a military airfield in the FAA file. It is listed here for reference and for emergency planning. Civil use needs prior permission, there is no FBO, and no Jet A you can buy. Do not plan it as a fuel stop or a routine alternate.

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01Runways

Runway	Length × width	Surface	Lighting
13/31	7,976 × 150 ft	concrete	lit

02Density altitude and turboprop runway margins

Standard temperature at 539 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)	539 ft	2,543 ft	2,167 ft	3,250 ft
Warm day (ISA +10)	1,739 ft	2,777 ft	2,293 ft	3,440 ft
Hot day (ISA +20)	2,939 ft	3,011 ft	2,420 ft	3,630 ft
35°C afternoon	3,068 ft	3,036 ft	2,434 ft	3,651 ft

Planning aid only. Even on a 35°C afternoon the longest runway (13/31, 7,976 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,651 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: KNJW is not a field to divert to or buy fuel at.

Airport	Distance	Longest runway
KMPE Philadelphia Municipal Airport	15 nm W	5,001 ft
KMEI Key Field / Meridian Regional Airport	28 nm S	10,003 ft
KAIV George Downer Airport	37 nm NE	5,001 ft
KSTF George M Bryan Airport	38 nm N	5,550 ft

04Fuel and services at KNJW

There is no public FBO fuel to log at KNJW. 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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