What was found
ATB - LEVEL AT FL260 FELT A PRESSURE BUMP FOLLOWED BY A CABIN RATE LEVEL ONE. 2 MINS LATER GOT CABIN ALT LEVEL 3 ALERT. EMERGENCY DESCENT TO MAUI. // PERFORMED VISUAL INSP. IN AFT ACCESSORY FOUND DUCT ASSY. DISCONNECTED. P/N: 5971880-1. RESECURED DUCY ASSY. OPS LEAK CK GOOD 21-30-00 AMM. PERFORMED FIM 21-30 TASK 806. RTS OF CPC PASS NO FAULTS NOTED. AMM 21-30-01-741-801. O.K. FOR SERVICE.PERFORMED VISUAL INSP. IN AFT ACCESSORY FOUND DUCT ASSY. DISCONNECTED. P/N: 5971880-1. RESECURED DUCY ASSY. OPS LEAK CK GOOD 21-30-00 AMM. PERFORMED FIM 21-30 TASK 806. RTS OF CPC PASS NO FAULTS NOTED. AMM 21-30-01-741-801. O.K. FOR SERVICE.