Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 26, 2020
Submitted
August 23, 2021
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
55,517 hours, 32,839 cycles
Part
Support
Condition
Corroded
Location
Cargo Bulkhead
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 FORWARD CARGO BAY AFT BULKHEAD LEFT HAND PANEL LOWER SUPPORT AT BS 500D; L.B.L. 25; W.L. 154. / REMOVED FCB L/H AFT BULKHEAD SUPPORT BS800D RECEIVED NEW SUPPORT LOCATED; DRILLED; COUNTERSUNK L/H AFT BULKHEAD SUPPORT BS5OOD INSTALLED NEW L/H AFT BULKHEAD SUPPORT BS500D IAW SRM 51-40-02; SRM 57-40-08; SRM 51-40-05; DWG #143A9481; DWG # 143A7902

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