Piper PA-31P-350 Mojave
Piston • twin engine • Low Wing • Retractable gear
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About the Piper PA-31P-350 Mojave
The Piper PA-31P-350 Mojave is a rare and unique aircraft that represents the final evolution of the PA-31 piston line. Often described as a “piston-powered Cheyenne,” it combines the rugged airframe of the turbine-powered Cheyenne I with heavily modified 350 hp piston engines. It was designed to fill the gap between the unpressurized Chieftain and the turboprop market, offering cabin-class luxury and pressurization for a fraction of the acquisition cost of a turbine.
Key Features for GA Buyers
- Pressurized Comfort: The Mojave’s defining feature is its 5.5 psi pressurization differential, allowing it to maintain a sea-level cabin altitude up to 12,000 ft. This significantly reduces pilot fatigue and increases passenger comfort on long cross-country flights.
- Cheyenne Genes: Because it shares its fuselage and wing structure with the Cheyenne I turboprop, the airframe is “overbuilt” for a piston aircraft. It features a dual-bus electrical system, robust landing gear, and thicker skins than the standard Navajo.
- Range & Fuel: With a massive fuel capacity of 238+ gallons (standard), the Mojave offers an impressive range (approx. 1,200 nm), allowing for non-stop travel between city pairs that would require fuel stops in lesser twins.
Trade-offs
- Performance Limitations: Despite having 700 total horsepower, the aircraft is heavy (7,200 lb MTOW). Its takeoff performance is sluggish compared to the lighter Chieftain, requiring over 3,000 ft to clear a 50 ft obstacle at gross weight.
- Engine Complexity: The Lycoming TIO-540-V2AD engines are highly complex, featuring factory intercoolers and pressurized magnetos to handle high-altitude operations. They are known to run hot and can be expensive to overhaul.
- Rarity: With only approximately 50 units built before production ended, finding model-specific airframe parts (unique to the Mojave hybrid configuration) can be difficult.
Technical Specifications
Dimensions
- Wingspan
- 40.8 ft
- Length
- 32.7 ft
- Height
- 13.0 ft
Weights
- Max Takeoff Weight
- 7,200 lbs
- Max Landing Weight
- 7,000 lbs
- Useful Load
- 2,130 lbs
- Fuel Capacity
- 238 gal
Performance
- Cruise Speed
- 220 KTAS
- Range
- 1190 NM
- Service Ceiling
- 26,500 ft
- Rate of Climb
- 1445 fpm
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