KONZ · Grosse Ile Municipal Airport

DETROIT/GROSSE ILE, MICHIGAN · SMALL AIRPORT

591

Elevation ft

Runways

4,846

Longest ft · 04/22

42.10N

83.16W

Grosse Ile Municipal Airport serves Detroit/Grosse Ile, Michigan at 591 ft elevation with its longest runway, 04/22, at 4,846 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
04/22	4,846 × 100 ft	concrete	lit
17/35	4,424 × 75 ft	concrete	lit

02Density altitude and turboprop runway margins

Standard temperature at 591 ft is about 14°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, 14°C)	591 ft	2,553 ft	2,172 ft	3,259 ft
Warm day (ISA +10)	1,791 ft	2,787 ft	2,299 ft	3,448 ft
Hot day (ISA +20)	2,991 ft	3,021 ft	2,426 ft	3,638 ft
35°C afternoon	3,133 ft	3,049 ft	2,441 ft	3,661 ft

Planning aid only. Even on a 35°C afternoon the longest runway (04/22, 4,846 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,661 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 KONZ is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KDTW Detroit Metropolitan Wayne County Airport	11 nm NW	12,003 ft
KYIP Willow Run Airport	18 nm NW	7,543 ft
KDET Coleman A. Young Municipal Airport	20 nm N	5,092 ft
KTDZ Toledo Executive Airport	35 nm SW	5,829 ft
KPTK Oakland County International Airport	36 nm N	6,521 ft

04Jet A prices and FBOs at KONZ

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

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