What was found
AIRCRAFT WOULD NOT PRESSURIZE. ONE PACK PREVIOUSLY DEFERRED. RETURNED TO DEN. SUPPLEMENTAL DATA UPDATE MALFUNCTIONING FWD RT PACK VALVE.REPLACED VALVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WOULD NOT PRESSURIZE. ONE PACK PREVIOUSLY DEFERRED. RETURNED TO DEN. SUPPLEMENTAL DATA UPDATE MALFUNCTIONING FWD RT PACK VALVE.REPLACED VALVE.