SDR SWAA2025090804490

Service difficulty report · Floor Support · Boeing 7377H4

Difficulty date: August 14, 2025
Submitted: September 8, 2025
Operation: Air carrier
Aircraft: N447WN
Make and model: Boeing 7377H4
Aircraft serial: 33720
Aircraft time: 70,511 hours, 42,001 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Condition: Corroded
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

CORROSION ANGLE FLOOR STRUCTURE ON BS 685 AT LEVEL STR 18L AND LBL 64 AT PASSENGER CABIN. REPLACED ANGLE AND FASTENERS LOCATED ON FLOOR STRUCTURE ON BS 685 AT LEVEL STR 18L AND LBL 64 AT PASSENGER CABIN IAW SRM 51-40-02-0G-0 AND DWG 144A7730, SHEET 9, REV-.

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