As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PACK RIGHT ADVISORY MESSAGE FLIGHT LEVEL 410 DESCENDED TO FL 330 RESET PACK CLIMBED TO FLIGHT LEVEL 410 PACK RIGHT ADVISORY MESSAGE AGAIN. ACCOUNT PACK ISSUE, EMERGENCY WAS DECLARED. FLIGHT IS AIR INTERRUPTING BACK TO PHILADELPHIA FOR MAINTENANCE. REPLACED RIGHT PACK AIR CYCLE MACHINE (AALA202305106161) AND RIGHT PACK LOW LIMIT VALVE (AALA202305111852).