SDR UIEA2025072501025

Service difficulty report · Seat Track · Boeing 7474B5F

Difficulty date: August 8, 2025
Submitted: August 8, 2025
Operation: Air carrier
Aircraft: N446MC
Make and model: Boeing 7474B5F
Aircraft serial: 33517
Aircraft time: 88,448 hours, 15,129 cycles
System (JASC): 5347 · Fuselage, Seat/Cargo Attach Fittings
Part: Seat Track
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

MAIN DECK, BS 1890-1900, LBL 11, SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION AREA REMOVED IAW SRM 51-10-02 AND REPROTECTED IAW SRM 51-20-01 BLEND OUT AREA MEASURED L: 5" X W: 0.7" X D: 0.005", WITHIN SRM 53-00-52-1A-1 ALLOWABLE DAMAGE 1, FIG. 101 LIMITS. NO FURTHER DEFECTS NOTED.

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