Service difficulty report · Stiffener · Boeing 747121

Difficulty date
August 11, 2006
Submitted
September 1, 2006
Operation
Air carrier
Aircraft
N682UP
Make and model
Boeing 747121
Aircraft serial
20349
Aircraft time
104,700 hours, 26,436 cycles
Part
Stiffener
Part number
654U6075594
Condition
Cracked
Location
Nlg Ww
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

TOP PANEL LBL20 STIFFENER FOUND CRACKED AT BS 290, CRACK LENGTH 1/2". NWW BS 290 LBL20 TOP PANEL ATTACH STIFFENER REPLACED AND INSTALLED AS PER SRM 51-10-01 PG 9 AND 51-30-02.