KJZI · Charleston Executive Airport

JOHNS ISLAND, SOUTH CAROLINA · SMALL AIRPORT

Elevation ft

Runways

5,350

Longest ft · 09/27

32.70N

80.01W

Charleston Executive Airport serves Johns Island, South Carolina at 17 ft elevation with its longest runway, 09/27, at 5,350 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
09/27	5,350 × 100 ft	concrete	lit
04/22	4,313 × 150 ft	concrete	lit

02Density altitude and turboprop runway margins

Standard temperature at 17 ft is about 15°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, 15°C)	17 ft	2,441 ft	2,112 ft	3,168 ft
Warm day (ISA +10)	1,217 ft	2,675 ft	2,238 ft	3,358 ft
Hot day (ISA +20)	2,417 ft	2,909 ft	2,365 ft	3,547 ft
35°C afternoon	2,421 ft	2,910 ft	2,365 ft	3,548 ft

Planning aid only. Even on a 35°C afternoon the longest runway (09/27, 5,350 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,548 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 KJZI is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KDYB Summerville Airport	26 nm NW	5,000 ft
KMKS Berkeley County Airport	29 nm N	5,001 ft
KRBW Lowcountry Regional Airport	35 nm NW	6,002 ft
KHXD Hilton Head Airport	45 nm SW	5,000 ft

04Jet A prices and FBOs at KJZI

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

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