As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB OUT THROUGH 1000` THE CREW REPORTED A BANG LIKE A BALLOON POPING. THE "DOOR SEAL" ANNUNCIATOR ILLUMINATED AND THEN THERE WAS AN INCREASE IN AIR NOISE. AFTER LANDING INVESTIGATION REVEALED THAT THE INLET FLEX LINE HAD SPLIT CAUSING THE DOOR SEAL TO DEFLATE. DOOR SEAL REPLACED AND SYSTEM OPERATION NORMAL.