CE-11-57: Powerplant, Engine Mount Section


The Federal Aviation Administration (FAA) received a report of a fatigue crack in a Model AT-402

airplane engine mount tube at the left hand firewall attach location. The crack started in the tip of the

weld where the tubes intersect at the attach bolt lug location (see photo below). This crack area is

separate from the engine mount area required to be inspected.

Applies To:
Air TractorAT-400 Series
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