What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On rotation #1 and #2 engine cowlings separated from engines, damaging left wing and left horizontal stabilizer. During maintenance on #1 and #2 engine thrust reverses. Maintenance closed but did not latch cowlings. During walk-around on preflight the flight engineer did not note the latches being non-secured.
As the FAA filed it
(-23) ON ROTATION #1 AND #2 ENGINE COWLINGS SEPARATED FROM ENGINES, DAMAGING LEFT WING AND LEFT HORIZONTAL STABILIZER. DURING MAINTENANCE ON #1 AND #2 ENGINE THRUST REVERSES. MAINTENANCE CLOSED BUT DID NOT LATCH COWLINGS. DURING WALK-AROUND ON PREFLIGHT THE FLIGHT ENGINEER DID NOT NOTE THE LATCHES BEING NON-SECURED.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.