Squawk Box

July 2016 Issue

Bearings

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

When the aircraft was pulled out of its hangar for a morning flight, it would not start, due to a dead battery. After the battery was removed for charging, examination of the electrical system found the alternator belt had flipped over on the ring gear and when the prop was moved, the alternator pulley did not move. Alternator was removed and front bearing was discovered to have failed; shaft would not turn. New alternator and belt installed.

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