Service difficulty report · Skin · Boeing 74747UF

Difficulty date
May 10, 2010
Submitted
May 11, 2010
Operation
Air carrier
Aircraft
N498MC
Make and model
Boeing 74747UF
Aircraft serial
25259
Aircraft time
43,275 hours, 6,484 cycles
Engine
Ge CF680C2B1F
Part
Skin
Condition
Delaminated
Location
Nacelle
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

DURING MX WALKAROUND, THE NR4 LT FAN COWL INNER AND OUTER SKINS WERE FOUND WITH DELAMINATION. EO: 4471A055 - PART 1 - TIME LIMITED REPAIR THE PART 1 TIME LIMITED REPAIR INSTALLS THROUGH BOLTS TO RESTORE THE CAPABILITY OF THE DISBONDED AREA AND IS FAA APPROVED IAW THE FAA FORM 8110-3 DATED 10MAY2010. THE PART 2 INSP IAW THIS EO ENSURES THE CONTINUED AIRWORTHINESS OF THE PART 1 TIME LIMITED REPAIR. THE PART 3 PERMANENT REPAIR RESTORES THE SUBJECT COWL TO THE ORIGINAL DESIGN CONFIGURATION.

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