KRPJ · Rochelle Municipal Airport - Koritz Field

ROCHELLE, ILLINOIS · SMALL AIRPORT

781

Elevation ft

Runway

5,001

Longest ft · 07/25

41.89N

89.08W

Rochelle Municipal Airport - Koritz Field serves Rochelle, Illinois at 781 ft elevation with its longest runway, 07/25, at 5,001 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	5,001 × 75 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 781 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)	781 ft	2,590 ft	2,192 ft	3,289 ft
Warm day (ISA +10)	1,981 ft	2,824 ft	2,319 ft	3,478 ft
Hot day (ISA +20)	3,181 ft	3,058 ft	2,446 ft	3,668 ft
35°C afternoon	3,368 ft	3,095 ft	2,465 ft	3,698 ft

Planning aid only. Even on a 35°C afternoon the longest runway (07/25, 5,001 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,698 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 KRPJ is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KDKB DeKalb Taylor Municipal Airport	17 nm E	7,026 ft
KRFD Chicago Rockford International Airport	18 nm N	10,002 ft
KARR Aurora Municipal Airport	28 nm E	6,501 ft
KSQI Whiteside County Airport - Joseph H Bittorf Field	28 nm W	6,499 ft
KFEP Albertus Airport	31 nm NW	5,504 ft
KVYS Illinois Valley Regional Airport Walter A Duncan Field	33 nm S	5,999 ft

04Jet A prices and FBOs at KRPJ

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

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