Piper is one of the most notable general aviation aircraft manufacturers in the world. The Vero Beach, Florida-based company is often considered to be one of the "Big Three" of general aviation ...

The company said it has received an FAA supplemental type certificate, or STC, for the use of its GFC 600 digital autopilot in the Piper PA-31-350 Navajo Chieftain. The GFC 600 is designed for ...

The airplane flight manual (AFM) for the Piper PA-31 Navajo and the Aries Aviation standard operating procedures — Aries was the aircraft operator — do not describe spin-recovery procedures ...