Service difficulty report · Stiffener · Boeing 7377K9

Difficulty date
September 23, 2024
Submitted
November 6, 2024
Operation
Air carrier
Aircraft
N7879A
Make and model
Boeing 7377K9
Aircraft serial
34321
Aircraft time
57,420 hours, 29,511 cycles
Part
Stiffener
Condition
Cracked
Location
Zone 200
Stage of operation
IN
How discovered
V
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 BL0 TO RBL 24.75 CENTER SECTION 2024-596932<[01] REPLACED STIFFENER LOC. ON FLOOR STRUCTURE BS540 BETWEEN BL0 TO RBL 24.75 CENTER SECTION IAW B737-700 SRM 51-40-02-0G AND DWG 143A5240 SHEET 3 REV B.;[02] CORRECTED STEP 1. REPLACED STIFFENER LOC. ON FLOOR STRUCTURE BS540 BETWEEN BL0 TO RBL 24.75 CENTER SECTION IAW B737-700 SRM 51-40-02-0G AND DWG 143A5240 SHEET 3 REV B. SEE INDIVIDUAL SIGN OFF BELOW.;[03] REPLACED STIFFENER LOC. ON FLOOR STRUCTURE BS540 BETWEEN BL0 TO RBL 24.75 CENTER SECTION IAW B737-700 SRM 51-40-02-0G AND DWG 143A5240 SHEET 3 REV B. SEE INDIVIDUAL SIGN OFF BELOW.

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