As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER FLIGHT WITH APU ON IT TAKES UP TO 30 SECONDS FOR SEAL TO DEFLATE ENOUGH TO ALLOW OPENING OF THE MAIN CABIN DOOR. SUBSEQUENTLY AFTER FLIGHT WITH APU ON IT TAKES UP TO 10 SECONDS FOR SEAL TO DEFLATE ENOUGH TO OPEN THE MAIN CABIN DOOR. REMOVED FAILED DEFLATION VALVE AND INSTALLED NEW DEFLATION VALVE REF AMM 52-10-04. PERFORMED OPS CHECK AND LEAK TEST OF DEFLATION VALVE REF AMM 52-10-04 WITH ALL CHECKS GOOD AT THIS TIME.