Service difficulty report · Shear Web · Boeing 747422

Difficulty date
October 29, 2012
Submitted
November 15, 2012
Operation
Air carrier
Aircraft
N177UA
Make and model
Boeing 747422
Aircraft serial
24384
Aircraft time
91,838 hours, 11,151 cycles
Engine
Pwa PW4056
Part
Shear Web
Condition
Cracked
Location
Fuselage
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

WHILE PERFORMING ROUTINE TASK CARD 824003015 TENSION TIE INSPECT FOUND CRACK AT STA 1120 LEFT SHEAR WEB. REPAIRED PER AMM 53-10-99 REV 156.