K48S · Harlem Airport

HARLEM, MONTANA · SMALL AIRPORT

2,643

Elevation ft

Runways

4,100

Longest ft · 11/29

48.57N

108.77W

Harlem Airport serves Harlem, Montana at 2,643 ft elevation with its longest runway, 11/29, at 4,100 by 75 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.

Open K48S in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
11/29	4,100 × 75 ft	asphalt	lit
15/33	1,933 × 120 ft	turf	unlit

02Density altitude and turboprop runway margins

Standard temperature at 2,643 ft is about 10°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, 10°C)	2,643 ft	2,953 ft	2,389 ft	3,583 ft
Warm day (ISA +10)	3,843 ft	3,188 ft	2,515 ft	3,773 ft
Hot day (ISA +20)	5,043 ft	3,422 ft	2,642 ft	3,963 ft
35°C afternoon	5,677 ft	3,545 ft	2,709 ft	4,063 ft

Planning aid only. Even on a 35°C afternoon the longest runway (11/29, 4,100 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (4,063 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 K48S is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KHVR Havre City County Airport	39 nm W	5,205 ft
KGGW Glasgow Valley County Airport Wokal Field	89 nm E	5,002 ft
KLWT Lewistown Municipal Airport	95 nm S	6,100 ft
KGTF Great Falls International Airport	123 nm SW	10,502 ft

04Jet A prices and FBOs at K48S

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at K48S, 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 K48S or read what a fuel stop actually saves.

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