Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date
June 25, 2023
Submitted
July 25, 2023
Operation
Air carrier
Aircraft
N294WN
Make and model
Boeing 7377H4
Aircraft serial
32540
Aircraft time
51,742 hours, 31,145 cycles
Part
Stiffener
Part number
UNKNOWN
Condition
Cracked
Location
Zn 100 Fus Lower
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 FLOOR STRUCTURE LOCATED BS540 BETWEEN BL 0 TO LBL 24.75 CENTER SECTION 2023-409582<[01] REPLACED STIFFENER LOCATED FLOOR STRUCTURE BS540 BETWEEN BL 0 TO LBL 24.75 CENTER SECTION IAW B737-700 SRM 51-10-02 AND SRM 51-40-02-0G-0; DRAWING 143A0060; SHEET 46; REV -. SEE INDIVIDUAL SIGNS OFF BELOW.;[02] REPLACED STIFFENER LOCATED FLOOR STRUCTURE BS540 BETWEEN BL 0 TO LBL 24.75 CENTER SECTION IAW B737-700 SRM 51-10-02 AND SRM 51-40-02-0G-0; DRAWING 143A0060; SHEET 46; REV -. SEE INDIVIDUAL SIGNS OFF BELOW. RII

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