XS93 · Diamond O Ranch Airport

SANTA ELENA, TEXAS · SMALL AIRPORT

420

Elevation ft

Runway

4,259

Longest ft · 12/30

26.72N

98.56W

Diamond O Ranch Airport serves Santa Elena, Texas at 420 ft elevation with its longest runway, 12/30, at 4,259 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.

Private-use airfield. The FAA file marks this field private use. It is listed here for reference. Landing needs the owner's prior permission, and there may be no fuel or services. Do not plan it as a fuel stop or a routine alternate.

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01Runways

Runway	Length × width	Surface	Lighting
12/30	4,259 × 100 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 420 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)	420 ft	2,520 ft	2,154 ft	3,231 ft
Warm day (ISA +10)	1,620 ft	2,754 ft	2,281 ft	3,421 ft
Hot day (ISA +20)	2,820 ft	2,988 ft	2,408 ft	3,611 ft
35°C afternoon	2,921 ft	3,008 ft	2,418 ft	3,627 ft

Planning aid only. Even on a 35°C afternoon the longest runway (12/30, 4,259 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,627 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

Listed for reference only: XS93 is not a field to divert to or buy fuel at.

Airport	Distance	Longest runway
KEBG South Texas International at Edinburg Airport	29 nm SE	5,000 ft
KMFE McAllen Miller International Airport	37 nm SE	7,120 ft
KBKS Brooks County Airport	37 nm NE	6,006 ft

04Fuel and services at XS93

There is no public FBO fuel to log at XS93. JetDesk collects Jet A prices that pilots actually paid, at civil fields, and its route finder leaves military and private-use fields out of every ranking. Read what a fuel stop actually saves.

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