As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LIFE RAFT VACUUM BAG INFLATED DUE TO CYLINDER LEAKAGE BETWEEN THE CYLINDER HEAD AND LIFE RAFT CYLINDER. THE AC WAS CRUISING AT 40,000 FT WHEN THE PILOT HEAR A LOUD POP. UPON INVESTIGATION, THE PILOT HAD DISCOVERED THE LIFE RAFT HAD AN UNCOMMANDED INFLATION. THE BANDS AROUND THE LIFE RAFT CONTAINER HELD THE LIFE RAFT TOGETHER AND IT WAS LATER REMOVED FROM UNDER THE COUCH.