PPRuNe Forums - View Single Post - 1986 UK Chinook Disaster Mini-Documentary
Old 28th Jun 2022, 17:53
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brett s
 
Join Date: Jan 2006
Location: USA
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I remember when they sent civilian contractors to do an inspection on the entire US Army CH-47C fleet, one of the things they were checking was torque on the spiral bevel gear bolts - my ship failed, quite a few were loose. Had to replace the aft transmission...

The crash referenced by 212man was a different cause though, related to using walnut shell media blasting during the transmission overhaul process - oil passages were being left plugged when things weren't cleaned out properly.

Helicopters are unforgiving of maintenance errors, some more than others.
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