Service difficulty report · Wedge · Boeing 777222

Difficulty date
February 21, 2006
Submitted
March 28, 2006
Operation
Air carrier
Aircraft
N791UA
Make and model
Boeing 777222
Aircraft serial
26933
Aircraft time
29,112 hours, 4,550 cycles
Engine
Pwa PW4090
Part
Wedge
Part number
114W426011
Part serial
NA
Condition
Delaminated
Location
Le Slat
Part time
29,112 hours, 4,550 cycles
Stage of operation
IN
How discovered
9
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

THE NR 2, 3 AND 13 LEADING EDGE SLATS HAVE LOCALIZED DELAMINATION ON THE LOWER SKIN OF THE TRAILING EDGE WEDGE. DELAMINATION REPAIRED TEMPORARILY WITH STRUCTURAL ADHESIVE INJECTION UNTIL PERMANENT REPAIR CAN BE ACCOMPLISHED AT THE NEXT HMV. AN NDT INSPECTION WAS ACCOMPLISHED ON 21 MAR 2006. PERMANENT REPAIR IS SCHEDULED FOR AUG 28, 2006. THE DELAMINATION OF THE TRAILING EDGE WEDGE IS A KNOWN PROBLEM. REFERENCE: 777 MM 57-43-99/801.