Service difficulty report · Flap · Boeing 747428

Difficulty date
May 11, 2019
Submitted
May 14, 2019
Operation
Air carrier
Aircraft
N952CA
Make and model
Boeing 747428
Aircraft serial
25238
Aircraft time
98,257 hours, 14,773 cycles
Engine
Ge CF680C2B1F
Part
Flap
Part number
65B3901157
Part serial
000182
Condition
Missing
Location
Lt Wing
Part time
98,257 hours, 14,773 cycles
Stage of operation
TO
How discovered
O
Nature of condition
F, S
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ON TAKE-OFF AIRCRAFT TRIED TO ROLL TO THE LEFT. DURING FLAP RETRACTION AT APPROXIMATE 10 DEGREE AILERON CONTROL RETURNED TO NORMAL. AIRCRAFT WAS OPERATED TO DESTINATION STATION PHIK AND HAD AN UNEVENTFUL LANDING. ON POST FLIGHT FOUND LEFT WING INBOARD FORE FLAP MISSING. PIECES OF FORE FLAP WERE RECOVERED AT DEPARTURE STATION PGUA. DEPARTURE OF FORE FLAP DURING TAKE-OFF CAUSED ADDITIONAL DAMAGE TO THE AIRCRAFT WING TO BODY FAIRING, NUMBER 5 AND NUMBER 6 GROUND SPOILER, WING TRAILING EDGE COMPOSITE PANEL, LEFT WING INBOARD MID FLAP AND LEFT WING INBOARD AILERON. A CONDITIONAL INSPECTION FOR PARTS DEPARTING THE AIRCRAFT HAS BEEN ACCOMPLISHED IN ACCORDANCE WITH AMM 05-51-58. A SUPPLEMENT TO THIS REPORT WILL BE SUBMITTED SHOULD MORE INFORMATION REGARDING THE EVENT BECOME AVAILABLE.