Squawk Box

July 2015 Issue

Alternators

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

The alternator cooling fan came apart after takeoff, and parts punched a hole in the induction air box downstream of the air filter. Also, the alternator belt became loose in the engine compartment. Loss of power from engine FOD damage resulted in an uneventful landing back to the airport. The cooling fan had fractured at one of the fins’ spot welds.

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