What was found
FLT NR 1204 - PHL - AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKEOFF. NO COCKPIT INDICATIONS. OUTFLOW VALVE WAS CLOSED. MAINTENANCE REPLACED RIGHT PACK TURBINE INLET SWITCH FOR PRECAUTIONARY MEASURES. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT NR 1204 - PHL - AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKEOFF. NO COCKPIT INDICATIONS. OUTFLOW VALVE WAS CLOSED. MAINTENANCE REPLACED RIGHT PACK TURBINE INLET SWITCH FOR PRECAUTIONARY MEASURES. (M)