As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK TURNED OFF DUE TO VIBRATION AT DOOR 2L/2R. *S/D* FOUND LEFT PACK RAM AIR DOOR TORQUE TUBE SHAFT (PN 213W3130-3) SHEARED AND INLET SIDEWALL DAMAGED AROUND INBOARD BEARING ATTACH OPENING. REPLACED TORQUE TUBE AND INBOARD AND OUTBOARD CAP ASSEMBLIES. FLEET SURVEY REVEALED ADDITIONAL CASES OF WEAR. BOEING DEVELOPING AN IMPROVED DESIGN.