Service difficulty report · Keelbeam · Boeing 74745E

Difficulty date
January 16, 2018
Submitted
January 30, 2018
Operation
Air carrier
Aircraft
N472MC
Make and model
Boeing 74745E
Aircraft serial
27062
Aircraft time
110,629 hours, 18,334 cycles
Part
Keelbeam
Part number
65B140571
Part serial
NSN
Condition
Corroded
Location
Bs 1344
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

CORROSION ON THE UPPER AND LOWER FACE OF THE KEEL BEAM LOWER STIFFENER BS 1344. LBL 16 - RBL 16. REMOVED AND REPLACED THE IAW SRM 51-40-02-0G-0, REV 101, SRM 51-40-02-0G-0, REV 101, AND DWG 65B10925, REV F, SHEET 16.

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