What was found
MAIN CABIN DOOR HANDLE STOP BUMPER FELL OFF. REMOVED FROM SERVICE. FERRIED. REPLACED MISSING BUMPER AND INSTALLED LONGER SCREW REF. Q400 AIPC 52-11-11-01 MCN 6520839-02 ISSUE 01. CHECKED HANDLE FORCES REF. Q400 AMM 52-11-00-820-801 PARA, 4.E., CLOSING WAS 20 IBF AND OPENING WAS 30 LBF WHICH ARE WITHIN LIMITS. OPS CHECKED GOOD. NOTE: TIGHENED BUMPER RETAINING SCREW JUST ENOUGH TO PREVENT BUMPER MOVEMENT. NO ADJUSTMENTS WERE NEEDED OR MADE. AIRCRAFT RETURNED TO SERVICE.