KPTN · Harry P Williams Memorial Airport

PATTERSON, LOUISIANA · SMALL AIRPORT

Elevation ft

Runways

5,399

Longest ft · 06/24

29.71N

91.34W

Harry P Williams Memorial Airport serves Patterson, Louisiana at 9 ft elevation with its longest runway, 06/24, at 5,399 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.

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01Runways

Runway	Length × width	Surface	Lighting
06/24	5,399 × 150 ft	asphalt	lit
04W/22W	4,500 × 100 ft	water	unlit

02Density altitude and turboprop runway margins

Standard temperature at 9 ft is about 15°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, 15°C)	9 ft	2,440 ft	2,111 ft	3,166 ft
Warm day (ISA +10)	1,209 ft	2,674 ft	2,238 ft	3,356 ft
Hot day (ISA +20)	2,409 ft	2,908 ft	2,364 ft	3,546 ft
35°C afternoon	2,411 ft	2,908 ft	2,364 ft	3,547 ft

Planning aid only. Even on a 35°C afternoon the longest runway (06/24, 5,399 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,547 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 KPTN is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KARA Acadiana Regional Airport	35 nm NW	8,002 ft
KREG Louisiana Regional Airport	35 nm NE	5,003 ft
KHUM Houma Terrebonne Airport	36 nm E	6,509 ft
KIYA Abbeville Chris Crusta Memorial Airport	42 nm NW	5,000 ft
KLFT Lafayette Regional Airport	45 nm NW	8,000 ft
KAPS Port of South Louisiana Executive Regional Airport	45 nm NE	5,151 ft

04Jet A prices and FBOs at KPTN

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KPTN, 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 KPTN or read what a fuel stop actually saves.

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