KMDQ · Madison County Executive Airport-Tom Sharp Jr Field

HUNTSVILLE, ALABAMA · SMALL AIRPORT

756

Elevation ft

Runway

6,500

Longest ft · 18/36

34.86N

86.56W

Madison County Executive Airport-Tom Sharp Jr Field serves Huntsville, Alabama at 756 ft elevation with its longest runway, 18/36, at 6,500 by 100 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
18/36	6,500 × 100 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 756 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)	756 ft	2,585 ft	2,190 ft	3,285 ft
Warm day (ISA +10)	1,956 ft	2,819 ft	2,316 ft	3,475 ft
Hot day (ISA +20)	3,156 ft	3,054 ft	2,443 ft	3,664 ft
35°C afternoon	3,337 ft	3,089 ft	2,462 ft	3,693 ft

Planning aid only. Even on a 35°C afternoon the longest runway (18/36, 6,500 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,693 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 KMDQ is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KFYM Fayetteville Municipal Airport	12 nm N	5,900 ft
KHSV Huntsville International Airport	17 nm SW	12,600 ft
KDCU Pryor Field Regional Airport	23 nm SW	6,107 ft
K4A6 Scottsboro Municipal Word Field	29 nm E	5,240 ft
KGZS Abernathy Field	30 nm NW	5,310 ft

04Jet A prices and FBOs at KMDQ

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

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