Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
November 29, 2025
Submitted
December 19, 2025
Operation
Air carrier
Aircraft
N459WN
Make and model
Boeing 7377H4
Aircraft serial
32497
Aircraft time
69,271 hours, 41,588 cycles
Part
Floorbeam
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

CRACKED FLOORBEAM, BS 540, RBL 1. REPLACED THE FLOORBEAM IAW SRM 51-10-02, ITEM 9, AND INSTALLED FASTENERS IAW SRM 51-40-02, & DWG 143A5240, SHEET 14. MEASUREMENT OF CRACK: L, 0.850 INCH;

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