As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: GATE AGENT FOUND FORWARD CABIN ENTRY DOOR HANDLE DISPLACED BEFORE OPENING DOOR; FLIGHT ATTENDANT REPORTED POP NOISE AT 10000 FEET ALSO. REMOVED AND REPLACED HANDLE SHAFT SPRING. FUNCTIONAL CHECK GOOD. PER AMM 53-11-11 AND FIM TASK 52-10-00-810-811.