XA93 · Tortuga Ranch Airport

BRUNDAGE, TEXAS · SMALL AIRPORT

550

Elevation ft

Runway

4,700

Longest ft · 17/35

28.62N

99.65W

Tortuga Ranch Airport serves Brundage, Texas at 550 ft elevation with its longest runway, 17/35, at 4,700 by 60 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
17/35	4,700 × 60 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 550 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)	550 ft	2,545 ft	2,168 ft	3,252 ft
Warm day (ISA +10)	1,750 ft	2,779 ft	2,295 ft	3,442 ft
Hot day (ISA +20)	2,950 ft	3,013 ft	2,421 ft	3,632 ft
35°C afternoon	3,082 ft	3,039 ft	2,435 ft	3,653 ft

Planning aid only. Even on a 35°C afternoon the longest runway (17/35, 4,700 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (3,653 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: XA93 is not a field to divert to or buy fuel at.

Airport	Distance	Longest runway
KCZT Dimmit County Airport	11 nm SW	5,003 ft
KCOT Cotulla-La Salle County Airport	25 nm SE	6,005 ft

04Fuel and services at XA93

There is no public FBO fuel to log at XA93. 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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