What was found
RAPID DECOMPRESSION @ FL < CABIN ALT SHOWED AND MASTER WARNING SOUNDED> O@ MASKS DEPLOYED FA NOTED SQUEALING NOISE FROM SERVICE DOOR.-C/A-DEFERRED PRESSURIZATION SYSTEM. M PROCEDURES C/W. REMOVED AND REPLACED PAX O2 GENERATORS AND MASKS IAW AMM 35-20-01. REMOVED AND REPLACED ALL USED PASSENGER OXYGEN MASKS IAW AMM 35-20-04. REMOVED EXCESS SEALANT FROM THE SERVICE DOOR. PRESSURIZED AIRCRAFT AND NO NOISES WERE HEARD IAW AMM 21-31-00. REMOVED AND REPLACED CANNON PLUG P0079 ON ELECTRO PNEUMATIC OUTFLOW VALVE IAW SWPM 20-50-00. PERFORMED OPERATIONAL CHECK OF MANUAL AND AUTOMATIC PRESSURIZATION MODES IAW AMM 21-31-00-700-801 AND 21-31-00-700-802 OPS CHECK GOOD. PERFORMED FUT IAW TASK 21-31-00-700-804-A. FUT GOOD. PERFORMED TEST OF BAGGAGE COMPARTMENT CHECK VALVES IAW AMM 21-27-02 NO DEFECTS NOTED. C/W WORK SCOPE. PERFORMED PNEUMATIC OUTFLOW VALVE FUNCTIONAL TEST OF OVERPRESSURE RELIEF DEVICES IAW AMM 21-31-00-700-809-A POST REMOVED AND REPLACED PNEUMATIC OUT FLOW VALVE(SEE TURNOVER FOR SIGN-OFF) AND FUT GOOD. MEL ITEM RESTORED M PROCEDURES CW.. FCF FOUND SATISFACTORY.