Service difficulty report · Shear Tie · Boeing 747451

Difficulty date
May 26, 2012
Submitted
May 31, 2012
Operation
Air carrier
Aircraft
N665US
Make and model
Boeing 747451
Aircraft serial
23820
Aircraft time
96,421 hours, 12,004 cycles
Part
Shear Tie
Part number
65B01753387
Condition
Cracked
Location
Bs 1200
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

DURING INSPECTION FOUND CABIN UPPER LOBE TENSION TIES AREA BS 1200. FOUND SHEAR TIE NEAR STRINGER CUTOUT CRACKED. MAINTENANCE FABRICATED NEW SHEAR TIE AS PER DWG 65B01735. CRACKED SHEAR TIE REMOVED AND NEW FABRICATED SHEAR TIE INSTALLED AS PER SRM 51-40-02. HEAT TREAT CARRIED OUT AS PER 5602 REV AF. HARDNESS TESTED AVERAGED HRB 88.7 AS PER 5946 REV AA. CONDUCTIVITY TEST CARRIED OUT FOUND VALUE 32 .5 PERCENT IACS WITHIN LIMIT AS PER 5651 REV B.