As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS NOT DECLARED DUE TO: PRESSURE LEAK AT CAPTAINS SLIDING WINDOW; AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT DFW. ACCOMPLISHED CABIN PRESSURISATION LEAK TEXT ON L2 WINDOW. PER 05-51-91. NO LEAKS NOTED, NO FAULT FOUND.