Air force manual 31 201 volume 7


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

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It was also license-built in a number of Latin American countries.

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It was a low-wing monoplane with a conventional tail, powered by two 310 hp (231 k W) Lycoming TIO-540-A turbocharged engines in so-ed "ter shark" cowlings, a feature shared with the Twin Comanche and also the PA-23 Aztec.

Air Force Instruction 10-245

The PA-31, now named "Navajo" after a Native American tribe, was not certified by the Federal Aviation Administration (FAA) until 24 February 1966, and deliveries did not begin until the following year, after the type was recertified in mid-1966 with an increase in maximum takeoff weht (OW) from 6,200 lb (2,812 kg) to 6,500 lb (2,948 kg).

Air force manual 31 201 volume 7:

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Overall: 91 Rates