As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LIFERAFT IN AFT CABIN INFLATED WHILE AIRCRAFT CLOSED AND LOCKED FOR OVERNIGHT. INVESTIGATION REVEALED THAT AN INCORRECT O-RING WAS USED IN THE INFLATION CYLINDER REGULATOR. ALL CARLTON REGULATORS WERE RECALLED AND CHECKED. RAFT REPLACED. OPERATION CHECKS NORMAL.