Service difficulty report · Torque Box · Boeing 747422

Difficulty date
July 30, 2009
Submitted
August 3, 2009
Operation
Air carrier
Aircraft
N128UA
Make and model
Boeing 747422
Aircraft serial
30023
Aircraft time
37,690 hours, 4,536 cycles
Engine
Pwa PW4056
Part
Torque Box
Condition
Cracked
Location
Cargo Bay
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

AFT PIT TORQUE BOX ON THE RT SIDE NEAR STATION 1690 HAS A 2 TO 3 INCH CRACK AND 2 INCH DEEP GOUGES ON THE SURFACE. DAMAGED AREA CIRCLED. REMOVED DAMAGED AREA. INSTALLED WEB REPAIR ON TORQUE BOX. INSTALLED ACCESS PANEL.