As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB, PASSENGER REPORTED AIR LEAK COMING FROM WINDOW 11F IN CABIN. AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND GASPER FLEX COUPLING TORN IN OVERHEAD. MADE REPAIR TO GASTER SYSTEM. OPERATIONAL CHECK OK.