What was found
AIR TURNBACK, LOUD PRESS LEAK NOISE AT F/O'S SLIDING WINDOW AT 12,000 FEET. CABIN PRESSURE SYSTEM WAS OK. OPENED AND INSPECTED F/O'S SLIDING WINDOW. NO DEFECTS NOTED. PRESSURIZED AIRCRAFT NO LEAKS NOTED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURNBACK, LOUD PRESS LEAK NOISE AT F/O'S SLIDING WINDOW AT 12,000 FEET. CABIN PRESSURE SYSTEM WAS OK. OPENED AND INSPECTED F/O'S SLIDING WINDOW. NO DEFECTS NOTED. PRESSURIZED AIRCRAFT NO LEAKS NOTED.