What was found
PDX - FLIGHT 2555, UNABLE TO CONTROL RIGHT AIR CONDITIONING PACK TEMPERATURE IN AUTO OR MANUAL POSITIONS. RETURNED TO THE GATE. MAINTENANCE PLACED THE AIR CONDITIONING PACK ON MEL 21-51-1B. AIRCRAFT RETURNED TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PDX - FLIGHT 2555, UNABLE TO CONTROL RIGHT AIR CONDITIONING PACK TEMPERATURE IN AUTO OR MANUAL POSITIONS. RETURNED TO THE GATE. MAINTENANCE PLACED THE AIR CONDITIONING PACK ON MEL 21-51-1B. AIRCRAFT RETURNED TO SERVICE.