SDR UIEA2025072601028

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 1920-1940, RBL 33. SEAT TRACK FOUND CORRODED. SEAT TRACK CORROSION REMOVED IAW SRM 51-10-02 & REPROTECTED IAW SRM 51-20-01 AND BLEND OUT AREA MEASURED L: 11" X W: 0.7" X D: 0.009", WITHIN SRM 53-00-52-1A-1. ALLOWABLE DAMAGE 1, FIG. 101 LIMITS. NO FURTHER DEFECTS NOTED.

More about the Boeing 747-4B5F