Service difficulty report · Floor Support · Boeing 7377H4

Difficulty date
December 16, 2023
Submitted
January 19, 2024
Operation
Air carrier
Aircraft
N457WN
Make and model
Boeing 7377H4
Aircraft serial
33856
Aircraft time
65,535 hours, 39,332 cycles
Part
Floor Support
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 INTERCOSTAL - WEB FLOOR STRUCTURE BS 540 BETWEEN BL 0 AND RBL 24.75 CENTER SECTION 2023-766610<[01] REPLACED INTERCOSTAL WEB LOC. ON FLOOR STRUCTURE BS 540 BETWEEN BL 0 AND RBL 24.75 CENTER SECTION IAW B737-700 SRM: 51-10-02 Ï¿½TEM 9 AND 51-40-02. SEE INDIVIDUAL SIGNOFFS BELOW.;[02] CORRECTIVE ACTION CERTIFIED RII

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