SDR ASAA2025112663081

Service difficulty report · Floor Support · Boeing 7378FH

Difficulty date: November 26, 2025
Submitted: December 17, 2025
Operation: Air carrier
Aircraft: N549AS
Make and model: Boeing 7378FH
Aircraft serial: 30824
Aircraft time: 68,466 hours, 24,432 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Floor Support
Part number: 147A56603
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

FLOOR SUPPORT AT BS 947-967 RBL 24 HAS SEVERAL AERAS OF CORROSION. GROUNDED - YES. REMOVED CORROSION ON FLOOR SUPPORT AT BS 947-967, RBL 24, LOST .030" OF MATERIAL FOUND BEYOND LIMITS IAW SRM 53-70-51-1A-1, REMOVED AND REPLACED INTERCOSTAL. PO 1138081.1 IAW SRM 51-40-02 AND DWG 147A5650 REV A. FLOOR SUPPORT WAS REMOVED ON CUSTOMER CARD G2255361,

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