Service difficulty report · Stiffener · Boeing 747121

Difficulty date
March 12, 2006
Submitted
March 24, 2006
Operation
Air carrier
Aircraft
N681UP
Make and model
Boeing 747121
Aircraft serial
19661
Aircraft time
106,939 hours, 27,146 cycles
Part
Stiffener
Part number
65B0794226
Condition
Cracked
Location
Bs 260-280
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

INSPECTION TYPE:C LH SIDE NWW INTERNAL BTN BS 260 AND 280 CRACK FOUND AT WL150, WL160 OF THE STIFFENER RADIUS RESPECTIVITY, CRACK LENGTH 1/4". NWW BS 260-280 WL150 AND WL160 INTERNAL STIFFENER REPLACED AS PER SRM 51-10-01 PG 9 AND INSTALLED AS PER SRM 51-30-02.