Propellers

Editorial Staff

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

Verified

** Illustration by Chris Gall**

Key Takeaways:

Aircraft experienced in-flight vibration due to propeller imbalance or severe mechanical failures involving bolts and internal components.
Propeller operational issues included failure to feather due to corroded/cracked blades and stripped low-pitch stop threads.
Critical hardware failures, such as sheared, loose, or hydrogen-embrittled bolts, led to propeller damage and a complete in-flight detachment, with maintenance deficiencies also implicated.

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