What was found
DURING C-CHECK INSPECTION IN YYC, FLOOR INTERCOSTAL AT AILERON BELLCRANK DAMAGED. MAINTENANCE FERRIED AIRCRAFT TO MSP FOR REPAIR. DURING MAINTENANCE FOUND FLOOR STIFFENER UNDER COCKPIT FLOOR AT AILERON BELLCRANK (LEFT) DAMAGED DUE TO INTERFERENCE WITH AILERON BELLCRANK PUSH-PULL ROD CONNECTING BOLT FOR AILERON POSITION TRANSMITTER. REPAIRED STIFFENER IAW EO A53204, DURING MAINT REMOVED AND REINSTALLED LT CONTROL COLUMN PUSH PULL AND AILERON POSITION SENSOR REF 409 204217 FOR DETAIL. AIRCRAFT RETURNED TO SERVICE 10/17/04.