Service difficulty report · Support Rib · Boeing 747428

Difficulty date
June 4, 2018
Submitted
July 27, 2018
Operation
Air carrier
Aircraft
N952CA
Make and model
Boeing 747428
Aircraft serial
25238
Aircraft time
95,505 hours, 14,278 cycles
Engine
Ge CF680C2B1F
Part
Support Rib
Part number
65B10865
Condition
Cracked
Location
Lt Wing
Part time
95,505 hours, 14,278 cycles
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

LEFT WING TRAILING EDGE SUPPORT RIB WEB AT WBL 255.692 INBOARD OF THE NR 6 SPOILER IS CRACKED. REMOVED CRACKED WEB, FABRICATED NEW LAMINATED WEB IN ACCORDANCE WITH STRUCTURAL REPAIR MANUAL 57-51-02-01-1 IDENTIFICATION AND INSTALLED NEW WEB IN ACCORDANCE WITH STRUCTURAL REPAIR MANUAL 51-40-02.