As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED FOR HAVY MAINTENANCE. UPPER CARGO WINDOW FRAME L-9 HAS PITTED CORROSION ON LOWER SURFACE AREA. REMOVED AND REPLACED LEFT HAND 9 CABIN WINDOW FRAME P/N 144N3250Y4 IN ACCORDANCE WITH STRUCTURAL REPAIR MANUAL 51-40-025 PARAGRAPH 7 AND DRAWING 144N3200.