Service difficulty report · Shield · Boeing 7377H4

Difficulty date
May 12, 2023
Submitted
June 21, 2023
Operation
Air carrier
Aircraft
N429WN
Make and model
Boeing 7377H4
Aircraft serial
33658
Aircraft time
66,602 hours, 39,316 cycles
Part
Shield
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 ON FWD SHIELD AT ACB BS767 - BS787 RBL21 WL158.<[01] CORROSION ON FWD SHIELD AT AFT CARGO BAY; LOCATED BETWEEN BS767 - BS 787; FOUND TO BE OUT OF LIMIT DUE TO NO ALLOWABLE DAMAGE ON SRM; PART WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR-9.C.;[02] VERIFIED CORRECTIVE ACTION 1;[03] LOCATED AND DRILLED NEW SHIELD P/N 146A8127-12 LOT: 1521252-1; AT ACB LOCATED BETWEEN BS767 - BS787 RBL 21 WL 158 IAW SRM 51-40-05-0G-0 AND DWG 146A0081.;[04] VERIFIED CORRECTIVE ACTION 3;[05] VERIFIED MEASUREMENT TABLE EXCEPT ITEMS 2; 3; 17; AND 18;[06] VERIFIED RII INSPECTION REQUIREMENTS ARE MET.;[07] VERIFIED THE MEASUREMENT TABLE. WORKSCOPE IS COMPLETE.

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