Service difficulty report · Seal · Boeing 747422

Difficulty date
November 8, 2011
Submitted
December 8, 2011
Operation
Air carrier
Aircraft
N180UA
Make and model
Boeing 747422
Aircraft serial
25224
Aircraft time
86,158 hours, 10,363 cycles
Engine
Pwa PW4056
Part
Seal
Condition
Worn
Location
Te Flap
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 TRAILING EDGE MID FLAP HAS TRAILING EDGE SLIT AND LEADING EDGE WORN THROUGH. LEFT SIDE TRAILING EDGE MID FLAP ACCORDIAN SEAL HAS 1 TRAILING HOLE AND 4 LEADING EDGE HOLES (DEFFERED) :ACCORDIAN SEAL IS REMOVED, WHEN REMOVED WE FOUND THE BEARING IS BAD , REMOVED TO REWORK. :THIS ACCORDIAN SEAL HAS THE WEAR THROUGH IN THE INBOARD RIB. :REMOVED DAMAGED ASSY AND ALL PART LOCATED IN ORDMM SHEETMETAL SHOP FOR REPAIR. INSTALLED NEW IB RIB ASSEMBLY TO EXISTING ACCORDIAN SEAL STRUCTURE, REF BOEING DRAWING 65B 08436 AND IPC 57-52-01,STARTED TO INSTALL NEW SEAL TO STRUCTURE ALL PARTS IN SHEETMETAL SHOP. -INF- :ACCORDIAN SEAL ASSY IS COMPLETE AND READY FOR INSTALLATION, INSTALLED REPAIRED SEAL ASSY, OPS CHK NORMAL.