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Piper PA-31 Navajo
Piper PA-31 Navajo (C-GXCY)
Type	Piston
Manufacturer	Piper Aircraft
Designed by	Project Engineer, Paul E. Everly
Maiden flight	September 30, 1964
Primary user	Corporate
Number built	2044

The PA-31 Navajo is a family of cabin-class, twin-engine aircraft designed and built by Piper Aircraft using Lycoming engines for the general aviation market.

In the mid-1960s, an aircraft of this size was sorely needed and founder William T. Piper requested the type be developed. Targeted at small-scale cargo and feeder liner operations and the corporate market, the aircraft was a success. It continues to prove a popular choice, but due to greatly decreased demand across the general aviation sector in the 1980s, production of the PA-31 ceased.

Contents 1 Variants 2 Specifications (PA-31-310 Navajo) 3 Specifications (PA-31-350 Chieftain) 4 References 5 Related content

The PA-31 series was produced in a variety of versions.

• PA-31-310 Navajo, sometimes referred to as a "straight Navajo". Also called the "Mini - Liner"
• PA-31-325 Navajo, referred to as the "CR" or Counter Rotating.
• PA-31-350 Navajo Chieftain (originally called the "Navajo II") featured a stretched cabin and more powerful engines (Lycoming TIO-540-J2BD)
• T-1020 was a Chieftain modified to be marketed to the commuter airline market.
• PA-31P Pressurized Navajo (commonly referred to as "P-Navajo") was equipped with a pressurized cabin
• Piper Mojave was an upgraded, reengined version of the PA-31P
• PA-31T Cheyenne, pressurized, turboprop
• T-1040, PA-31T3, was an airline version of the PA-31T Cheyenne.

General characteristics

• Crew: 1, possibly 2 depending on regulations operated under
• Capacity: 6 passengers
• Length: 32 ft 7.5 in (9.95 m)
• Wingspan: 40 ft 8 in (12.40 m)
• Height: 13 ft 0 in (3.96 m)
• Wing area: 229 sq. ft (21.. m²)
• Empty weight: 3759 lb (1709 kg)
• Useful load: 2741 lb (1246 kg)
• Max takeoff weight: 6,500 lb (2,900 kg)
  
• Maximum ramp weight: 6,880 lb (3,130 kg) with BLRI VG System
• Maximum (STC) takeoff weight: 6,840 lb (3,110 kg) with BLIRI VG System
• Powerplant: 2× Lycoming TIO-540-A2B or -A2C , 310 hp (230 kW) each
• Propellers: constant speed, controllable pitch, fully feathering, Hartzell propeller

Performance

• Never exceed speed: 236 knots (272 mph, 437 km/h)
• Maximum speed: 188 knots (216 mph, 348 km/h)
• Maneuvering speed: 164 knots (188 mph, 304 km/h)
• Stall speed: 70 knots (80 mph, 130 km/h)
• Minimum controllable speed: 74 knots (85 mph, 137 km/h)
• Range: 1,025 nm (1,180 mi, 1,898 km)
• Service ceiling: 24,000 ft (7,300 m)

General characteristics

• Crew: 1, possibly 2 depending on regulations operated under
• Capacity: 8 passengers
• Length: ft in (m)
• Wingspan: 40 ft 8 in (12.40 m)
• Height: 13 ft (3.96 m)
• Wing area: 229 ft² (21.28 m²)
• Empty weight: 4,003 lb (1,817 kg)
• Useful load: 2,533 lb (1,150 kg)
• Max takeoff weight: 7,000 lb (3,175 kg)
  
• Maximum Ramp Weight: 7,045 lb (3,195kg)
• Powerplant: 2× Lycoming TIO-540-J2BD , 350 hp (260 kW) each
• Propellers: with a constant speed, controllable pitch, fully feathering, Hartzell propeller

Performance

• Never exceed speed: 236 knots (272 mph, 437 km/h) indicated
• Maximum speed: 188 knots (216 mph, 348 km/h) indicated
• Cruise speed: 178 knots (205 mph, 330 km/h) true
• Stall speed: 77 knots (89 mph, 143 km/h) indicated
• Range: 1,025 nm (1,180 mi, 1,900 km)
• Service ceiling: 24,000 ft (7,300 m)

• The Piper PA-31 Chieftain/Mojave/T-1020/T-1040 from Airliners.net
• The Piper PA-31 Navajo/Pressurized Navajo from Airliners.net
• Piper Navajo Information Manual, Revision 9, March 18th 1994, Piper Aircraft Corporation, Manual Part Number 761-723
• Piper Navajo Pilot's Operating Manual, Revision 34, April 22nd 2002, Piper Aircraft Corporation, Manual Part Number 761-456

Related development

• Piper PA-31T Cheyenne

Comparable aircraft

• Rockwell Aero Commander
• Mitsubishi Mu-2
• Beechcraft King Air
• Cessna 425
• Cessna 441

Designation sequence

• PA-25 - PA-28 - PA-30 - PA-31 - PA-31T - PA-32 - PA-34

See also

v • d • e Piper aircraft models
Civilian	E-2 · F-2 · G-2 · H-2 · J-2 (Taylor) · J-2 (Piper) · J-3 · J-4 · J-5 · PA-6 · PA-7 · PA-8 · PA-11 · PA-12 · PA-14 · PA-15 · PA-16 · PA-17 · PA-18 · PA-20 · PA-22 · PA-23 · PA-24 · PA-25  · PA-28 · PA-30 · PA-31 · PA-31T · PA-32 · PA-32R · PA-34 · PA-36 · PA-38 · PA-39 · PA-40 · PA-42 · PA-44 · PA-46 · PA-60 · PiperJet
Military	AE · C-83 · HE · L-4 · L-14 · L-18 · L-21 · LNP · NE · O-59 · PA-48 · TG-8 · U-7

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