As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EXTREMELY LOUD SQUEAL EMANATING FROM MAIN DOOR ON AIRCRAFT. SOUND IS COMING FROM AREA OF LOWER DOOR HINGE OR FLOOR. INSTALLED NEW ENTRY DOOR SEAL PER AMM 52-10-18. AWAITING SEALANT CURE TIME AND PRESSURIZATION LEAK CHECK. PERFORMED PRESSURIZATION OF ACFT PER AMM 21-31-00. NO LEAKS NOTED. NO LOUD SQUEAL NOTED. ACFT OKAY FOR SERVICE.