K8WC · Washington County Airport

POTOSI, MISSOURI · SMALL AIRPORT

959

Elevation ft

Runway

4,000

Longest ft · 02/20

37.93N

90.73W

Washington County Airport serves Potosi, Missouri at 959 ft elevation with its longest runway, 02/20, at 4,000 by 60 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 K8WC in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
02/20	4,000 × 60 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 959 ft is about 13°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, 13°C)	959 ft	2,625 ft	2,211 ft	3,317 ft
Warm day (ISA +10)	2,159 ft	2,859 ft	2,338 ft	3,507 ft
Hot day (ISA +20)	3,359 ft	3,093 ft	2,464 ft	3,697 ft
35°C afternoon	3,589 ft	3,138 ft	2,489 ft	3,733 ft

Planning aid only. Even on a 35°C afternoon the longest runway (02/20, 4,000 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,733 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 K8WC is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KPCD Perryville Regional Airport	41 nm E	6,483 ft
KFYG Washington Regional Airport	41 nm N	5,002 ft
KSUS Spirit of St Louis Airport	44 nm N	7,486 ft
KCPS St Louis Downtown Airport	47 nm NE	7,002 ft
KVIH Rolla National Airport	51 nm W	5,501 ft
KSTL St. Louis Lambert International Airport	52 nm N	11,020 ft

04Jet A prices and FBOs at K8WC

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at K8WC, 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 K8WC or read what a fuel stop actually saves.

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