KU01 · American Falls Airport

AMERICAN FALLS, IDAHO · SMALL AIRPORT

4,419

Elevation ft

Runway

4,900

Longest ft · 03/21

42.80N

112.83W

American Falls Airport serves American Falls, Idaho at 4,419 ft elevation with its longest runway, 03/21, at 4,900 by 50 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 KU01 in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
03/21	4,900 × 50 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 4,419 ft is about 6°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, 6°C)	4,419 ft	3,300 ft	2,576 ft	3,864 ft
Warm day (ISA +10)	5,619 ft	3,534 ft	2,703 ft	4,054 ft
Hot day (ISA +20)	6,819 ft	3,768 ft	2,829 ft	4,244 ft
35°C afternoon	7,880 ft	3,975 ft	2,941 ft	4,412 ft

Planning aid only. Even on a 35°C afternoon the longest runway (03/21, 4,900 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (4,412 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 KU01 is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KPIH Pocatello Regional Airport	12 nm NE	9,059 ft
KIDA Idaho Falls Regional Airport	54 nm NE	9,002 ft
KJER Jerome County Airport	72 nm W	5,002 ft
K1U7 Bear Lake County Airport	74 nm SE	5,728 ft
KLGU Logan-Cache Airport	74 nm SE	9,020 ft
KTWF Joslin Field Magic Valley Regional Airport	76 nm W	8,704 ft

04Jet A prices and FBOs at KU01

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KU01, 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 KU01 or read what a fuel stop actually saves.

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