As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - FLT 2686 - CMH-EWR - AIR TURNBACK, LOSS OF CABIN PRESSURE. CREW DESCENDED TO 10,000 FEET. REMOVED AND REPLACED OUTFLOW VALVE IAW 21-31-51. REMOVED AND REPLACED CABIN PRESSURE CONTROLLERS NR 1 AND NR 2 AS PRECAUTION IAW 21-31-34. RESTOWED CABIN MASKS. REMOVED AND REPLACED USED OXYGEN GENERATORS IAW 35-23-00. FOUND LOOSE CONNECTOR. (M)