Service difficulty report · Attach Angle · Boeing 7378H4

Difficulty date
June 20, 2023
Submitted
July 19, 2023
Operation
Air carrier
Aircraft
N8543Z
Make and model
Boeing 7378H4
Aircraft serial
63587
Aircraft time
19,500 hours, 9,726 cycles
Part
Attach Angle
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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

CORROSION AFT CARGO BAY ATTACH ANGLE UNDER SHIELD HAS MULTIPLE AREAS UNDER NUT PLATES BS767 TO BS787 RBL21 WL156<[01] CORROSION ON ANGLE WAS FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS ARE GIVEN IN THE SRM. PART REPLACEMENT REQUIRED PER SRM 51-10-02.;[02] VERIFIED CORRECTIVE ACTION 1.;[03] REMOVED DAMAGED AFT CARGO BAY ATTACH ANGLE UNDER SHIELD BS767 TO BS787 RBL21 WL156 IAW SRM 51-40-02-0G-0;[04] LOCATED AND DRILLED AFT CARGO BAY ATTACH ANGLE UNDER SHIELD BS767 TO BS787 RBL21 WL156 IAW SRM 51-40-05-0G-0 AND DWG 146A8123.;[05] VERIFIED STEPS 3 AND 4;[06] OK TO INSTALL;[07] VERIFIED CORRECTIVE ACTION 6<BR>OK TO INSTALL GIVEN;[08] INSTALLED AFT CARGO BAY ATTACH ANGLE UNDER SHIELD BS767 TO BS787 RBL21 WL156 IAW SRM 51-40-02-0G-0 AND DWG 146A8123.;[09] VERIFIED CORRECTIVE ACTIONS 8 AND MEASUREMENT TABLE.

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