Service difficulty report · Beam · Boeing 74747UF

Difficulty date
July 22, 2017
Submitted
July 28, 2017
Operation
Air carrier
Aircraft
N475MC
Make and model
Boeing 74747UF
Aircraft serial
29252
Aircraft time
75,187 hours, 13,694 cycles
Part
Beam
Condition
Corroded
Location
Aft Cargo Door
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

AFT CARGO DOOR LOWER BEAM INNER WEB BS 1810 - 1840 AND 1890 - 1920 FOUND CORRODED AROUND DOOR LINER ANCHOR NUT AREAS. CORROSION REMOVED IAW SRM 51-10-02, AND CHECKED WITHIN SRM 52-30-02-1A ALLOWABLE DAMAGED 1, FIG 101.

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