Service difficulty report · Fitting · Boeing 747428

Difficulty date
July 6, 2020
Submitted
September 9, 2020
Operation
Air carrier
Aircraft
N952CA
Make and model
Boeing 747428
Aircraft serial
25238
Aircraft time
101,195 hours, 15,251 cycles
Engine
Ge CF680C2B1F
Part
Fitting
Part number
311U2111765B1725
Condition
Corroded
Location
Nr 3 Nacelle
Part time
101,195 hours, 15,251 cycles
Stage of operation
IN
How discovered
9
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 ACCOMPLISHMENT OF SERVICE BULLETIN 747-54A2182 POST STRUT MODIFICATION INSPECTIONS OF NUMBER 3 PYLON, CORROSION WAS NOTED ON THE FORWARD UPPER SPAR FITTING AND THE WING FRONT SPAR TO STRUT UPPER LINK FITTING. ACCOMPLISHED REPAIRS IN ACCORDANCE WITH STRUCTURAL REPAIR MANUAL 54-51-90-2R-5 REPAIR 5 AND 57-20-90-2R-1 REPAIR 1.