Squawk Box

October 2005 Issue

Squawk Box: 10/05

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts.


Cessna 150
Lost Rudder Hinge Bolt

The upper rudder pivot bolt backed out of its self-locking nutplate at the upper hinge while in flight. The rudder was ripped from the lower bell crank control, and departed the aircraft. The aircraft landed without incident. The rudder was found and its upper pivot bolt was retained in the rudder cap. The bolt could be inserted in the nutplate with light, finger pressure only, and removed the same way. The nutplate was worn and had lost its locking ability. At installation of a factory new rudder assembly, a drilled...

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