Propellers

Editorial Staff

Wednesday, June 17, 2020 at 11:20 AM ET

Verified

** Illustration by Chris Gall**

Key Takeaways:

The incidents reveal a variety of propeller malfunctions, including dynamic imbalance, corrosion leading to feathering failure, and stripped low-pitch stop threads.
Several cases involved critical structural failures, such as a complete propeller detachment in-flight and severe damage like missing, embrittled bolt heads causing charring and vibration.
Maintenance and inspection deficiencies were implicated, with issues such as absent logbook entries for propeller removal and improperly torqued or loose hub bolts.

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Editorial Staff