Service difficulty report · Transmission · Boeing 747422

Difficulty date
May 2, 2011
Submitted
May 27, 2011
Operation
Air carrier
Aircraft
N181UA
Make and model
Boeing 747422
Aircraft serial
25278
Aircraft time
82,330 hours, 10,088 cycles
Engine
Pwa PW4056
Part
Transmission
Part number
65B81127172
Part serial
307
Condition
Damaged
Location
Te Flap Sys
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

RT FWD FLAP AND NR 7 FLAP CARRIAGE ASSY DAMAGED. TRANSMISSION NR 7 HAS DEEP GOUGES & MID FLAP OUTBOARD CUTOUT HAS DAMAGE TO ASSESS. ACCOMPLISHED HFEC OF AREA PER NDT, NO CRACKS. REPLACED TRANSMISSION PER MM.