What was found
CABIN PRESSURE CLIMBING, AUTO FAIL LIGHT ILLUM, EMERG DESCENT. PRESSURIZATION UNCONTROLLABLE, MASKS DEPLOYED EXCEPT ROW 20. FOUND LT SAFETY RELIEF VALVE FAILED. REPLACED LT & RT VALVE, FWD & AFT OUTFLOW VALVES, DELTA P MODULE, SELECTOR PANEL, PRESSURE CONTROLLER & LT RAM AIR DOOR ACTUATOR. OPS GOOD. REPAIRED LEAKS BOTH CARGO DOORS & AVIONICS COOLING OUTLET VALVE. REPLACED LWR FLAP HINGE MAIN ENTRY DOOR & 12 FUSELAGE BELLY DRAINS. INSPECTED BS 178 FWD PRESSURE B/H UNDER PRESSURE, NO LEAKS. REPLACED CONNECTOR D640 PRESSURE MODULE, REPAIRED PINS 10, 11, 24, 27 & CHAFED WIRES. REPLACED OXYGEN GENERATORS, REPACKED MASKS. FOUND MASK LANYARD CAUGHT AROUND DOOR LATCH ROW 20. REPOSITIONED, OPS GOOD.