What was found
WHILE ADVANCING PWR FOR A NO PACK T/O, A LOUD BANG WAS HEARD FOLLOWED BY A CABIN PRESSURE SURGE. J-AREA OVERHEAT, POM PROCEDURES COMPLETED. RETURNED TO GATE. MTC FOUND NR 2 DUCT BLOWN BEHIND AFT B/B WALL ON LEFT SIDE OF LAV TANK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE ADVANCING PWR FOR A NO PACK T/O, A LOUD BANG WAS HEARD FOLLOWED BY A CABIN PRESSURE SURGE. J-AREA OVERHEAT, POM PROCEDURES COMPLETED. RETURNED TO GATE. MTC FOUND NR 2 DUCT BLOWN BEHIND AFT B/B WALL ON LEFT SIDE OF LAV TANK.