SDR UIEA200400167

Service difficulty report · Fitting · Boeing 747230B

Difficulty date: September 22, 2004
Submitted: October 5, 2004
Operation: Air carrier
Aircraft: N512MC
Make and model: Boeing 747230B
Aircraft serial: 21220
System (JASC): 5740 · Wing, Attach Fittings
Part: Fitting
Condition: Corroded
Location: Wing
Stage of operation: IN
How discovered: 9
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

WHILE PERFORMING EO 4757A087, REAR SPAR UPPER CHORD AND SIDE BODY INSPECTION. CORROSION STILL EXIST ON THE UPPER REAR SPAR INTERNAL SPLICE FITTING AFTER INCORPORATING NR 5 HOLE DIA MAX OF 1.40 INCHES WITH SLEEVED BOLT REPAIR. LEVEL 1 MINOR. REAMED HOLE NR 5 TO FINAL SIZE OF 1.50 INCHES TO COMPLETELY REMOVED THE CORROSION. PERFORMED OPEN HOLE HFEC TO ENSURE HOLE IS DAMAGE FREE. INSTALLED SLEEVED BOLT REPAIR. (M)