SDR SWAA2022122973666

Service difficulty report · Floor Support · Boeing 7377H4

Difficulty date: November 19, 2022
Submitted: December 29, 2022
Operation: Air carrier
Aircraft: N275WN
Make and model: Boeing 7377H4
Aircraft serial: 36153
Aircraft time: 51,164 hours, 30,694 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Cracked
Location: Bs 380-400 Rbl25
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

INTERCOSTAL CRACKED AT BS 380-400 RBL24.75. REMOVED THE FLOOR SUPPORT IAW SRM 51-40-02-0G-0. LOCATED AND DRILLED A NEW ANGLE IAW SRM 51-40-05-0G-0. TREATED AND PRIMED ALL FASTENERS HOLES IAW SRM 51-20-01-0G-0, AND AMM 51-21-72-370-804. INSTALLED THE NEW ANGLE IAW SRM 51-40-02-0G-0, AND DWG 143A5400.

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