Pratt & Whitney R-985-AN-14B Flyweight Hardware Failures

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Pratt & Whitney R-985-AN-14B Flyweight Hardware Failures

 SAFO 15007, Pratt & Whitney R-985-AN-14B Flyweight Hardware Failures, is now published.

 

This SAFO advises aircraft owners, operators and mechanics about potential engine failures due to fatigued flyweight screws and associated expanders that are incorrectly modified and/or under-torqued during installation.

 

The SAFO can be viewed by downloading the.pdf file

or by clicking on the following link 

http://www.faa.gov/other_visit/aviation_industry/airline_operators/airline_safety/safo/all_safos/

so, just how widespread is this problem?? No AD note, so it can't be too bad, Right?

Being issued as a SAFO and not a AD tells me no one has died due to the problem. Three engine failures in flight is a small number but seems pretty serious so I would not be surprised to find this turns into an AD if there are more failures.

Can't say for sure, but I heard two Beavers at Kenmore had this show up. Both were overhauled by Aero Engines in the early 2010s, and both had 3 blade Hartzell props. Take if for what it is, hearsay!

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