What was found
AIRCRAFT PERFORMED AN UNSCHEDULED LANDING AT GDL DUE TO DURING DESCENT AT 14,000 FEET, THE RH PACK AND LH BLEED TRIP OFF LIGHTS TURNED ON AND OXYGEN MASK DEPLOYED; SO THE FLIGHT CREW ACCOMPLISHED THE QRH 2.7 PROCEDURE, CONFIRMING THE FAILURE. MAINTENANCE PERSONNEL PERFORMED THE CABIN DEPRESSURIZATION CONDITION CONDITIONAL INSPECTION IAW AMM 05-51-81-210-801, DETECTING ALL PASSENGER CHEMICAL OXYGEN GENERATORS ACTIVATED; THE FORWARD CLOSET PORTABLE OXYGEN BOTTLE WITH LOW PRESSURE; AFT RH CLOSET BOTH DISPOSABLE OXYGEN MASKS USED; AFT OUTFLOW VALVE GASKET DAMAGED; AFT OUTFLOW VALVE BONDING JUMPER FRAYED. THE WO´S 5560966, 5560970, 5560993, 5560994, 5561017, 5561018, 5562494, 5563117, 5563131, 5563164 AND 5564623 WERE ISSUED TO PERMANENT REPAIR; ALL OXYGEN GENERATORS WERE REPLACED IAW AMM TASKS 35-22-11-000/400-804-001; THE FORWARD CLOSET PORTABLE OXYGEN BOTTLE WERE REPLACED IAW AMM TASK 35-31-01-960-801; THE OXYGEN MASKS WERE REPLACED IAW AMM TASK 35-31-01-960-801 STEP 2.E AND PORTABLE OXYGEN CYLINDER PRESSURE AND CONDITION CHECK WAS PERFORMED IAW TASK 35-31-00-710-801; AFT OUTFLOW VALVE GASKET WAS REPLACED IAW AMM 21-31-03-400-801; THE BONDING JUMPER WAS REPLACED IAW AMM 21-31-03; THE CABIN PRESSURE CONTROLLERS WERE REPLACED IAW AMM 21-31-01-000/400-801. THE FIM 21-52 TASKS 809 AND 835 WAS PERFORMED, THE PASSENGER OXYGEN SYSTEM MANUAL DEPLOY OPERATIONAL TEST WAS PERFORMED IAW AMM TASK 35-22-00-700-802, TESTED CORRECT.