As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLIDE PRESSURE AT DOOR 5 LEFT LOW. THERE WAS A SMALL LEAK AROUND O-RING ON THE GAUGE ELBOW ASSEMBLY GOING INTO VALVE. REPLACED O-RING, WATER TESTED FOR 15 MINUTES, NO LEAK FOUND. REPLACED BOTTLE WITH STOCK BOTTLE. REPLACED SLIDE RAFT ASSEMBLY. SLIDE PROBLEM ROOT CAUSE: O'RING HARDENED & LOST ELASTICITY.