Service difficulty report · Fitting · Boeing 747121

Difficulty date
September 9, 2001
Submitted
October 26, 2001
Operation
Air carrier
Aircraft
N681UP
Make and model
Boeing 747121
Aircraft serial
19661
Aircraft time
97,510 hours, 25,124 cycles
Part
Fitting
Part number
65B083593
Condition
Cracked
Location
Fuselage
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

INSPECTION TYPE:C LEFT SIDE BS 1350 BULKHEAD SHEAR FITTING AFT SIDE CRACK FOUND AT THE LOCATION OF VERTICAL FLANGE O/B AREA THE CRACK THRU TWO BOLT HOLES 3.5 INCH LENGTH. LEFT BS 1350 BULKHEAD AFT UPPER CRACKED SHEAR FITTING WAS REPLACED AS PER BOEING SB 747-53-2213 INCLUDING FIG 3, 4, 8, 9 & 12. ALSO DURING FITTING REPLACEMENT ADJACANT STRUCTURE FOUND CORROSION AND SKIN CRACK.