Service difficulty report · Intercostal · Boeing 7377H4

Difficulty date
August 18, 2023
Submitted
September 25, 2023
Operation
Air carrier
Aircraft
N227WN
Make and model
Boeing 7377H4
Aircraft serial
34450
Aircraft time
59,279 hours, 35,528 cycles
Part
Intercostal
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 ON INTERCOSTAL WEB FLOOR STRUCTURE LOCATED BTW BS 328 TO BS 344 LBL 46.5 AT FWD GALLEY AREA 2023-530675<[01] REPLACED NEW WEB - INTERCOSTAL FLOOR STRUCTURE LOCATED BTW BS 328 TO BS 344 LBL 46.5 AT FWD GALLEY AND FASTENERS IAW B737-700 SRM 51-40-02<BR>AND DWG 141A5400 SHEET 44 REV -SEE INDIVIDUAL SIGN OFF BELOW;[02] CORRECTIVE STEP 1: REPLACED NEW WEB - INTERCOSTAL FLOOR STRUCTURE LOCATED BTW BS 328 TO BS 344 LBL 46.5 AND FASTENERS IAW B737-700 SRM 51-40-02 AND DWG 141A5400 SHEET 44 REV -SEE INDIVIDUAL SIGN OFF BELOW;[03] REPLACED BY NEW WEB - INTERCOSTAL ON FLOOR STRUCTURE LOCATED BTW BS 328 TO BS 344 LBL 46.5 AND FASTENERS IAW B737-700 SRM 51-40-02 AND DWG 141A5400 SHEET 44 REV -<BR><BR>RII<BR><BR>SEE INDIVIDUAL SIGN OFF BELOW

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