KPRN · Mac Crenshaw Memorial Airport

GREENVILLE, ALABAMA · SMALL AIRPORT

451

Elevation ft

Runway

5,501

Longest ft · 14/32

31.85N

86.61W

Mac Crenshaw Memorial Airport serves Greenville, Alabama at 451 ft elevation with its longest runway, 14/32, at 5,501 by 80 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.

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01Runways

Runway	Length × width	Surface	Lighting
14/32	5,501 × 80 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 451 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)	451 ft	2,526 ft	2,158 ft	3,236 ft
Warm day (ISA +10)	1,651 ft	2,760 ft	2,284 ft	3,426 ft
Hot day (ISA +20)	2,851 ft	2,994 ft	2,411 ft	3,616 ft
35°C afternoon	2,959 ft	3,015 ft	2,422 ft	3,633 ft

Planning aid only. Even on a 35°C afternoon the longest runway (14/32, 5,501 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,633 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

Useful as alternates, as fuel stops when the price at KPRN is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KMGM Montgomery Regional (Dannelly Field) Airport	29 nm N	9,020 ft
KTOI Troy Municipal Airport at N Kenneth Campbell Field	31 nm E	6,197 ft
KGZH Evergreen Regional Airport/Middleton Field	34 nm SW	5,005 ft
K79J South Alabama Regional At Bill Benton Field Airport	34 nm S	6,000 ft
KSEM Craig Field	36 nm NW	8,014 ft

04Jet A prices and FBOs at KPRN

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KPRN, the app flags a price stale after two weeks, and the route finder ranks every field within a corridor of your route by net savings after the cost of the extra cycle. Log a price at KPRN or read what a fuel stop actually saves.

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