As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)RH EMERGENCY EXIT FOUND STUCK AND COULD NOT BE OPENED. EXIT HANDLE WOULD ONLY MOVE 1/3 OF REQUIRED DISTANCE AND AIR VALVE WAS NOT ALLOWING DOOR SEAL TO DEFLATE. WITH PRESSURE STILL INDOOR SEAL, DOOR W OULD NOT OPEN. VALVE REPLACED. FURTHER INVESTIGATION FOUND AIR VALVE CORRODED AT LEVER PIVOT ARM.