SDR ERKR200100127

Service difficulty report · Fitting · Boeing 747128

Difficulty date: May 15, 2001
Submitted: May 15, 2001
Operation: Air carrier
Aircraft: N3203Y
Make and model: Boeing 747128
Aircraft serial: 19751
Aircraft time: 85,973 hours, 19,030 cycles
System (JASC): 5400 · Nacelle/Pylon Structure
Part: Fitting
Condition: Damaged
Location: Nr 2 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 2 ENGINE PYLON, FORWARD MOUNT, OVERSIZE HOLES. DURING SCHEDULED MAINTENANCE INSPECTION OF THE AIRPLANE CRACKS WERE FOUND IN THE INBOARD AND OUTBOARD HANGER FITTING UPPER ATTACHMENT HOLES. THE CRACKS WERE REMOVED BY OVERSIZING, AND NDT INSPECTED TO ASSURE A CRACK AND CORROSION FREE CONDITION. OVERSIZE DIA BOLTS WERE INSTALLED PER BOEING RECOMMENDATIONS PER ECRA 3203-54-049-2.