Service difficulty report · Longeron Fitting · Boeing 747409

Difficulty date
July 21, 2011
Submitted
August 22, 2011
Operation
Air carrier
Aircraft
N18701
Make and model
Boeing 747409
Aircraft serial
30759
Aircraft time
51,124 hours, 8,863 cycles
Part
Longeron Fitting
Part number
65B150342324
Condition
Cracked
Location
Zone 100
Stage of operation
IN
How discovered
E
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

(B18701) CRACKS WERE FOUND ON RT SIDE LONGERON EXTENSION FITTING WHEN PERFORMING MPD 53-440-00 INSPECTION. REMOVED AND INSTALLED LONGERON FITTING IAW 747-53A2390, FIG 22.