Service difficulty report · Shield · Boeing 7377H4

Difficulty date
April 28, 2023
Submitted
May 31, 2023
Operation
Air carrier
Aircraft
N285WN
Make and model
Boeing 7377H4
Aircraft serial
32536
Aircraft time
51,630 hours, 31,054 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 AFT CARGO BAY SHIELD FWD OF CARGO DOOR AROUND MULTIPLE NUT PLATE HOLES BS767 TO BS794 RBL22 WL156<[01] CORROSION ON SHIELD WAS FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS ARE GIVEN IN THE SRM;[02] VERIFIED CORRECTIVE ACTION 1.;[03] REMOVED DAMAGE AFT CARGO BAY SHIELD FWD OF CARGO DOOR BS767 TO BS794 RBL22 WL156 IAW SRM 51-40-02-0G-0;[04] LOCATED AND DRILLE NEW AFT CARGO BAY SHIELD FWD OF CARGO DOOR BS767 TO BS794 RBL22 WL156 IAW SRM 51-40-05-0G-0 AND DWG 146A0081.;[05] VERIFIED CORRECTIVE ACTION 4.;[06] REAPPLIED PROTECTIVE FINISH PER MM 51-21-73-370-804 AS SHOWN IN PREVIOUSLY ACCOMPLISHED EO 5360-E-16462-NG;[07] OK TO INSTALL NEW SHIELD BS 767-794 RBL 22 WL 156.;[08] VERIFIED CORRECTIVE ACTION 6; 7 AND MEASUREMENT TABLE WITH OK TO INSTALL NEW SHIELD GIVEN;[09] INSTALLED SHIELD BS 767-794; RBL 22; WL 156 PER SRM 51-40-02-0G-0; DRAWING 146A0081.;[10] UPDATED STEP 1.;[11] VERIFIED CORRECTIVE ACTION 9 AND 10;[12] ALL WORK IS COMPLETE;[13] VERIFIED COMPLETE.

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