Service difficulty report · Intercostal · Boeing 7377BD

Difficulty date
June 25, 2023
Submitted
July 28, 2023
Operation
Air carrier
Aircraft
N7721E
Make and model
Boeing 7377BD
Aircraft serial
34479
Aircraft time
56,723 hours, 30,056 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 WEB - INTERCOSTAL FLOOR STRUCTURE LOCATED BS294.5 TO BS312 AT BL0 FWD GALLEY AND LAV 2023-404971<[01] REPLACED WEB INTERCOSTAL AND FASTENERS LOCATED BTW BS294.5 TO BS312 AT BL0 FWD GALLEY AND LAV IAW B737-700 SRM 51-10-02 PARAGRAPH 9 AND DWG 141A5400; SHEET 23; REV. ?. SEE INDIVIDUAL SIGN-OFF BELOW;[02] REPLACED WEB INTERCOSTAL AND FASTENERS LOCATED BTW BS294.5 TO BS312 AT BL0 FWD GALLEY AND LAV IAW B737-700 SRM 51-10-02 PARAGRAPH 9 AND DWG 141A5400; SHEET 23; REV. ?. RII VERIFIED

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