Service difficulty report · Doubler · Boeing 777FS2

Difficulty date
July 14, 2022
Submitted
July 29, 2022
Operation
Air carrier
Aircraft
N863FD
Make and model
Boeing 777FS2
Aircraft serial
37734
Aircraft time
40,766 hours, 6,588 cycles
Part
Doubler
Part number
143W2314Y405
Condition
None
Location
Zone 100
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

DURING PERFORMING EO G-5710-E0365655 P7 STEP8.C.(5),FOUND 01EA ZLJ-8(BACB30NY8K*) COUNTERSUNK FASTENER AT STA998 STGR35 LHS TOO CLOSE TO EDGE OF MACHINED STEP OF DOUBLER P/N 143W2314Y405, AND WILL RESULT IN KNIFE EDGE WITH MACHINED STEP ON AFT EDGE OF COUNTERSUNK HOLE. THE COUNTERSUNK FASTENER TOO CLOSE TO EDGE OF MACHINED STEP OF DOUBLER REPAIRED AS PER EA G-5310-T0369496 P1 STEP 1,TITLE:FUSELAGE-MAINFRAME-LH AND RH UNDERWING LONGERON MODIFICATION PER EO G-5710-E0365655-DEVIATIONS TO SB777- 57A0122 RB .REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100.REFER TO WRI :53100827 FOR WORK DETAILS.

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