Service difficulty report · Shear Web · Boeing 747422

Difficulty date
June 27, 2016
Submitted
June 28, 2016
Operation
Air carrier
Aircraft
N120UA
Make and model
Boeing 747422
Aircraft serial
29166
Aircraft time
59,645 hours, 6,899 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

RIGHT BS 1120, TENSION TIE AREA 1 EA HOLE FOUND CRACKED AT SLOPING SHEAR WEB, BS 1120. RT SLOPING SHEAR WEB WAS CRACKED. REPAIR IAW SRM 53-40-30, REPAIR 3, FIG 201.