As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT HAS LOUD SQUEAL IN COCKPIT UNABLE TO HEAR COMMUNICATIONS. ACP ACFT GRD PRESSURIZATION PER REQUEST OF TOMC. FOUND NO PRESSURE LEAKS IN FLT DECK WERE FOUND, SUSPECT REMOVAL OF DAMAGED EXTERNAL PWR DOOR DF262 WAS CAUSE FOR LOUD SQUEAL. EXTERNAL PWR DOOR WAS REPLACED IN DEN. REQUEST OUTBD CREW COMMENT. FOUND ON ARRIVAL EXTERNAL POWER DOOR BENT MAKING IT DIFFICULT TO CLOSE.