Service difficulty report · Doubler · Boeing 777FS2

Difficulty date
October 7, 2022
Submitted
October 11, 2022
Operation
Air carrier
Aircraft
N890FD
Make and model
Boeing 777FS2
Aircraft serial
41439
Aircraft time
39,521 hours, 6,432 cycles
Part
Doubler
Part number
143W2314Y406
Condition
Misrepaired
Location
Zone 100
Stage of operation
NR
How discovered
9
Nature of condition
W
Precautionary procedure
O

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 B P8 STEP8.C.(5), FOUND 01EA ZLJ-8(BACB30NY8K*) COUNTERSUNK FASTENER AT STA998 STGR35 RHS TOO CLOSE TO EDGE OF MACHINED STEP OF DOUBLER P/N : 143W2314Y406, AND WILL RESULT IN KNIFE EDGE WITH MACHINED STEP ON AFT EDGE OF COUNTERSUNK HOLE.

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