Squawk Box

May 2010 Issue

Untorqued, Delaminated

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

Inspection of a recent engine installation uncovered a fractured engine-mount bolt. After informing the STC holder of the failure, we were told we should have re-torqued these bolts after 25 hours of operation. This information was not included in the STC. The submitter believes the STC is inadequate in ensuring continued airworthiness.

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