Service difficulty report · Stiffener · Boeing 747422

Difficulty date
April 29, 2009
Submitted
May 1, 2009
Operation
Air carrier
Aircraft
N120UA
Make and model
Boeing 747422
Aircraft serial
29166
Aircraft time
41,281 hours, 4,936 cycles
Engine
Pwa PW4056
Part
Stiffener
Condition
Out Of Tolerance
Location
Bs 2292-2300
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

FOUND SHORT EDGE MARGIN AT TWO FASTENER HOLES COMMON TO STIFFENER 146U1320-18 AND WEB 146U1321-7 LOCATED AT BS 2292-2300, RBL 60-RBL 80. MAJOR REPAIR ACCOMPLISHED: MANUFACTURED AND INSTALLED NEW WEB AND STIFFENER.