8D4 · Paul C. Miller-Sparta Airport

SPARTA, MICHIGAN · SMALL AIRPORT

775

Elevation ft

Runway

4,033

Longest ft · 07/25

43.13N

85.68W

Paul C. Miller-Sparta Airport serves Sparta, Michigan at 775 ft elevation with its longest runway, 07/25, at 4,033 by 75 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
07/25	4,033 × 75 ft	asphalt (good)	lit

02Density altitude and turboprop runway margins

Standard temperature at 775 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)	775 ft	2,589 ft	2,192 ft	3,288 ft
Warm day (ISA +10)	1,975 ft	2,823 ft	2,318 ft	3,478 ft
Hot day (ISA +20)	3,175 ft	3,057 ft	2,445 ft	3,667 ft
35°C afternoon	3,361 ft	3,094 ft	2,465 ft	3,697 ft

Planning aid only. Even on a 35°C afternoon the longest runway (07/25, 4,033 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,697 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 8D4 is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KGRR Gerald R. Ford International Airport	16 nm SE	10,001 ft
KFFX Fremont Municipal Airport	23 nm NW	6,501 ft
KMKG Muskegon County Airport	25 nm W	6,500 ft
KBIV West Michigan Regional Airport	30 nm SW	6,002 ft
K9D9 Hastings Airport	31 nm SE	5,003 ft
KAMN Gratiot Community Airport	45 nm E	5,004 ft

04Jet A prices and FBOs at 8D4

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at 8D4, 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 8D4 or read what a fuel stop actually saves.

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