As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 9000 - (ATB) AIR TURN BACK TO ICT DUE TO PRESSURIZATION ISSUES AND REPORT OF FO'S WINDOW LEAKING AIR. O2 MASKS DID NOT DEPLOY. CORRECTIVE ACTION: MAINTENANCE FOUND NO FAULTS ON CPC'S 1 OR 2. DEBRIS WAS FOUND AND REMOVED FROM FO'S SLIDING WINDOW. BOTH CPC'S WERE REPLACED AS PRECAUTION. C/W NO-GO-ODI PREVENTION TASKS AND PERFORMED A DUAL PACK CONFIDENCE CHECK. THE AIRCRAFT WAS RETURNED TO SERVICE. (LP5378892)