As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRESSURIZATION SQUEAL REPORTED AT 21A FROM CABIN CREW...NO SYSTEM ABNORMALITIES NOTED. PRESSURIZED AIRCRAFT AND IDENTIFIED A SIGNIFICANT LEAK FROM EMERGENCY EXIT DOOR AT 21A. REMOVED AND REPLACED THE BLADE SEAL REF AMM 52-09-11-400-801. LEAK CHECK GOOD. NO SQUEALING NOISE FROM INSIDE THE AIRCRAFT AT 4 PSID.