FAA Warns of Uncommanded Propeller Feathering | Aviation International News

FAA Warns of Uncommanded Propeller Feathering

Affected PCUs should be removed and replaced as soon as possible, beginning with twin-engine aircraft with affected PCUs installed on both engines.

By AIN Staff • AIN Staff

May 10, 2015

A new Safety Alert for Operators published by the FAA warns aircraft owners/operators about the potential for uncommanded feathering when certain propeller control units (PCUs) and adapters are improperly installed, repaired or overhauled. The basic PCU in question is widely used by UTC Aerospace (Hamilton Sundstrand/Hamilton Standard) in twin-engine aircraft.

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