What was found
FLIGHT RETURNED TO GATE, DUE TO RT AIR CONDITIONING PACK DEFERRED AND LT AIR CONDITIONING PACK OVERHEAT TRIPPED AND WOULD NOT RESET. REMOVED AND REPLACED WING ISOLATION VALVE DUE TO STUCK OPEN. OPS CHECK OK. (W)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLIGHT RETURNED TO GATE, DUE TO RT AIR CONDITIONING PACK DEFERRED AND LT AIR CONDITIONING PACK OVERHEAT TRIPPED AND WOULD NOT RESET. REMOVED AND REPLACED WING ISOLATION VALVE DUE TO STUCK OPEN. OPS CHECK OK. (W)