As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT DECK LEFT HAND SLIDING WINDOW IS HARD TO OPEN AND HARD TO CLOSE. MAINTENANCE FOUND THE LEFT HAND SLIDING WINDOW DRAIN TUBE CAUGHT IN SLDING WINDOW DUE TO THE DRAIN TUBE RETAINING CLIPS BEING OUT OF POSITION. MAINTENANCE REPOSITIONED THE DRAIN TUBE RETAINING CLIPS AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 56-11-11.