Service difficulty report · Flap Track · Boeing 747422

Difficulty date
August 19, 2010
Submitted
September 3, 2010
Operation
Air carrier
Aircraft
N116UA
Make and model
Boeing 747422
Aircraft serial
26908
Aircraft time
48,042 hours, 5,676 cycles
Engine
Pwa PW4056
Part
Flap Track
Condition
Damaged
Location
Nr 5
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

TAKE C/A ON NR5 FLAP TRACK FWD SUPPORT FITTING. IT IS DAMAGED IN 2 PLACES. 1ST PLACE IS ON OTBD SIDE BELOW FUSE PIN, 2ND IS ON OTBD SIDE ABOVE FUSE PIN. BOTH AREAS MARKED IN RED. BLENDED AFFECTED AREAS, LOOKED LIKE TOOL MARKS, NEED EDDY CURRENT INSP AND ROTO PEEN. FINAL BLEND DIMENSIONS ARE AREA NR1 7-8" LONG BY 3-4" WIDE .025 DEEP. AREA NR 2 2" LONG BY 2.75" WIDE .015" DEEP IAW EVA 80000 SHOT PEEN REQUIRED BEFORE SEP 18 2010. ROTO PEEN WILL REQUIRE INBD TRACK FWD MOUNT TO BE DISCONNECTED AND LOWERED FOR ACCESS TO THE FITTING. RECOMMEND 2 SHIFT SLOT. REVISED UA EVA 8000A. AFTER EDDY CURRENT ACP ROTOPEEN REF GN 1-0-1-076 REINSTALLED AND SECURED FWD FIXED FAIRING.