Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
May 13, 2021
Submitted
June 3, 2021
Operation
Air carrier
Aircraft
N412WN
Make and model
Boeing 7377H4
Aircraft serial
29818
Aircraft time
65,852 hours, 38,836 cycles
Part
Stiffener
Condition
Cracked
Location
Bs 663 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

BS663 VAPOR BARRIER STIFFER IS CRACKED AT RBL 31.83 / REMOVED AND REPLACED STIFFNER LOCATED AT BS 663; RBL 31.83 WITH P/N 111A1308U16; ITEM 7531949 IAW B-737-700; SRM 51-40-02; DWG # 111A1000 59202U 15MAY21

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