As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING REPLACEMENT OF R4 DOOR SLIDE THE EPAS SYSTEM ACTIVATED AND BLEW THE DOOR OPEN. AFTER FURTHER TS FOUND DOOR 4R SAFETY SWITCH TO BE FAULTED. WITH BATTERY PACK SWITCH ON DISARM POSITION EPASS BOTTLE SQUIB CONNECTOR DM52109 PIN 1 WAS GETTING CONSTANTLY. REF SSM 52-11-13-101. R & R R4 EPAS RESERVOIR, OPS CHECK GOOD IAW AMM 52-11-22. R & R R4 EPAS BATTERY PACK, OPS CHKD GOOD IAW AMM 52-11-20.