Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
July 5, 2023
Submitted
August 4, 2023
Operation
Air carrier
Aircraft
N913WN
Make and model
Boeing 7377H4
Aircraft serial
29840
Aircraft time
49,236 hours, 29,953 cycles
Part
Intercostal
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 ON INTERCOSTAL LOCATED FLOOR STRUCTURE BS 540 BTW RBL 24.75 TO RBL 45.5 AT CENTER SECTION 2023-431113<[01] REPLACED INTERCOSTAL AND FASTENERS LOCATED FLOOR STRUCTURE BS 540 BTW RBL 24.75 TO RBL 45.5 AT CENTER SECTION IAW B737-700 SRM 51-40-02 SRM 51-10-02 ITEM 9 AND DWG 143A0060 SHEET 36 REV A;[02] REPLACED INTERCOSTAL AND FASTENERS LOCATED FLOOR STRUCTURE BS 540 BTW RBL 24.75 TO RBL 45.5 AT CENTER SECTION IAW B737-700 SRM 51-40-02 SRM 51-10-02 ITEM 9 AND DWG 143A0060 SHEET 36 REV A RII CERTIFIED

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