As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: PACK FAILURE. 1 PACK LIGHT ILLUMNATED INFLIGHT. RESET OKAY AND THEN LIGHT RE-ILLUMINATED. FLIGHT RETURNED TO FIELD. TROUBLESHOT 1 PACK FAULT , UPON TROUBLESHOOTING FOUND DEFLECTOR DOOR SPRING BROKEN. REMOVED AND REPLACED THE 1 DEFLECTOR DOOR SPRING IAW IPC 21-51-22.