As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FLT 864 - AFTER DEPARTURE FROM PIT, THERE WAS AN EXCESSIVE AMOUNT OF AIR NOISE FROM THE LEFT SLIDING WINDOW EVEN THOUGH THE WINDOW WAS CLOSED AND LOCKED. FLIGHT RETURNED AND LANDED AT PIT WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE AFT ROLLER WAS OUT OF ITS TRACK. REINSTALLED THE WINDOW IN THE TRACK. (M)