As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: CAPTAINS SLIDING WINDOW HANDLE DEPRESS BUTTOM MISSING RED PAINT. RED LINE SHOULD CLEARLY SHOW WHEN WINDOW CLOSED AND LOCKED. MAINTENANCE REPAIRED CAPTAINS SLIDING WINDOW BUTTON PER AARD 56-11-00 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.