Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
May 30, 2023
Submitted
June 20, 2023
Operation
Air carrier
Aircraft
N418WN
Make and model
Boeing 7377H4
Aircraft serial
29823
Aircraft time
71,436 hours, 42,247 cycles
Part
Stiffener
Part number
UNKNOWN
Condition
Cracked
Location
Zn 200 Fus Top
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

CRACK STIFFENER ASSY LOCATED BS 540 BETWEEN BL 0 TO LBL 24.75 AT PASSENGER CABIN 2023-361019<[01] REPLACED STIFFENER ASSY LOCATED BS540 BETWEEN BL 0 TO LBL 24.75 AT PASSENGER CABIN IAW B737-700 SRM 51-40-02 AND SRM 51-10-02 DWG 143A0060 SHEET 36 REV A SEE INDIVIDUAL SIGN OFF BELOW.;[02] REPLACED STIFFENER ASSY LOCATED BS540 BETWEEN BL 0 TO LBL 24.75 AT PASSENGER CABIN IAW B737-700 SRM 51-40-02 AND SRM 51-10-02 DWG 143A0060 SHEET 36 REV A SEE INDIVIDUAL SIGN OFF BELOW.<BR>CERTIFIED AS RII

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