2OR1 · Big Muddy Ranch Airport

FOSSIL, OREGON · SMALL AIRPORT

1,641

Elevation ft

Runway

4,185

Longest ft · 04/22

44.83N

120.50W

Big Muddy Ranch Airport serves Fossil, Oregon at 1,641 ft elevation with its longest runway, 04/22, at 4,185 by 70 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.

Private-use airfield. The FAA file marks this field private use. It is listed here for reference. Landing needs the owner's prior permission, and there may be no fuel or services. Do not plan it as a fuel stop or a routine alternate.

Open 2OR1 in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
04/22	4,185 × 70 ft	asphalt (good)	lit

02Density altitude and turboprop runway margins

Standard temperature at 1,641 ft is about 12°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, 12°C)	1,641 ft	2,758 ft	2,283 ft	3,425 ft
Warm day (ISA +10)	2,841 ft	2,992 ft	2,410 ft	3,615 ft
Hot day (ISA +20)	4,041 ft	3,226 ft	2,536 ft	3,804 ft
35°C afternoon	4,435 ft	3,303 ft	2,578 ft	3,867 ft

Planning aid only. Even on a 35°C afternoon the longest runway (04/22, 4,185 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,867 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: 2OR1 is not a field to divert to or buy fuel at.

Airport	Distance	Longest runway
KS33 Madras Municipal Airport	30 nm W	5,091 ft
S39 Prineville Airport	37 nm SW	5,405 ft
KRDM Roberts Field	44 nm SW	7,038 ft

04Fuel and services at 2OR1

There is no public FBO fuel to log at 2OR1. 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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