As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER DOOR MASTER WARNING IN FLIGHT FOLLOWED BY PROX 1 FAULT. HANDLE POPPED OUT OF STOWED POSITION, FOUND WX CURTAIN INTERFERING WITH DOOR CLOSURE. MOVED CURTAIN. DEFERRED PAX DOOR PER MEL 52-21-01 CAT A. VERIFIED DOOR IND OPERATIVE PER MEL INSTRUCTIONS. DOOR IS CLOSED, LATCHED AND LOCKED. REMOVED AND REPLACED PX 107 DOOR SENSOR IAW CRJ AMM 52-70-04-000/400-808 OPS CHECK GOOD AT THIS TIME. THIS CLEARS MEL.