As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: FIRST OFFICERS SLIDING WINDOW LEVER TRIGGER DID NOT FULLY EXTEND WHEN WINDOW WAS CLOSED, MAY NOT LATCH PROPERLY. MAINTENANCE CLEANED AND LUBED WINDOW TRACK AND PERFORMED SATISAFACTORY OPERATIONAL CHECK PER AMM 56-11-00.