Service difficulty report · Doubler · Boeing 777FHT

Difficulty date
March 4, 2022
Submitted
March 4, 2022
Operation
Air carrier
Aircraft
N844FD
Make and model
Boeing 777FHT
Aircraft serial
37138
Aircraft time
39,357 hours, 5,959 cycles
Part
Doubler
Part number
143W2314Y406
Condition
Misaligned
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 EA T G-5710-T0366182 A P2 STEP 11.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. THE COUNTERSUNK FASTENER TOO CLOSE TO EDGE OF MACHINED STEP OF DOUBLER REPAIRED AS PER EA: G-5710-T0367168 P2 STEP 1. TITLE: WING - BASIC WING STRUCTURE -- CENTER WING RING CHORD, FRONT SPAR LOWER CHORD AND WEB, LH AND RH UNDERWING LONGERON INSPECTION / MODIFICATION - DEVIATION TO SB 777-57A0122 RB. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100. REFER TO WRI: 57106211 FOR WORK DETAILS.

More about the Boeing 777FHT