SDR UPS04441936

Service difficulty report · Fitting · Boeing 747123

Difficulty date: January 25, 2004
Submitted: February 18, 2004
Operation: Air carrier
Aircraft: N672UP
Make and model: Boeing 747123
Aircraft serial: 20324
Aircraft time: 70,871 hours, 20,783 cycles
System (JASC): 5415 · Nacelle/Pylon, Attach Fittings
Part: Fitting
Condition: Corroded
Location: Nr 4 Pylon
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

NR 4 PYLON DIAGONAL BRACE UNDERWING FITTING, HOLE NR 10 I/B ROW MOST AFT CORROSION FOUND ON BACKUP FITTING BORE AREA. DEFECTIVE AREA FASTENER HOLE CORROSION REPAIR CARRIED OUT AS PER HX RS R57-24-35102 AND EO B747-5740-19955-A. FINAL HOLE 0.562 INCH TO CLEAN UP CORROSION.