A repair station technician finds this aircraft’s seat structure broken (P/N 5519009-22). “The upper chair base assembly is cracked at the chair back attach points.” He speculates stress and metal fatigue are the probable cause of this discrepancy. “The chair was repaired in accordance with Aviation Fabricators STC ST01042WI Structural Seat Repair.”

(See also last July and September’s Alerts for similar defects. SDRS search yields nine entries. Factoring in repaired frames never reported, it would be wise to inspect these items frequently.)

Part Total Time: unknown.