Service difficulty report · Rib · Boeing 747422

Difficulty date
June 27, 2011
Submitted
July 28, 2011
Operation
Air carrier
Aircraft
N120UA
Make and model
Boeing 747422
Aircraft serial
29166
Aircraft time
50,426 hours, 5,971 cycles
Engine
Pwa PW4056
Part
Rib
Part number
65B084647
Condition
Damaged
Location
Rt Wing 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 SIDE INBOARD MID FLAP ACCORDIAN SEAL WAS REMOVED FROM AIRCRAFT AND PLACED IN THE SHEETMETAL SHOP AT SUPERBAY. FOUND OUTER RIB ON ACCORDIAN SEAL SUPPORT ASSY WITH STRUCTURE DAMAGE AT AFT SECTION WHERE STRUCTURE CONNECTS TO SUPPORT ROD. RIB ASSY WAS REPLACED. INSTALLED NUT PLATES ON NEW INBD WEB. REBUILT SPRINGS AND INSTALLED. STARTED INSTALLING ACCORDIAN SEAL. TUBE ASSY WAS REPLACED.