Service difficulty report · Shield · Boeing 7377H4

Difficulty date
July 30, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N447WN
Make and model
Boeing 7377H4
Aircraft serial
33720
Aircraft time
58,733 hours, 34,620 cycles
Part
Shield
Condition
Corroded
Location
Bs 494 Rbl 23
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 AFT SHIELD FWD CARGO BAY BS 494.5 RBL 23 WL 156 ; / [01] CORROSION FOUND ON AFT SHIELD FWD CARGO BAY BS 494.5 RBL23 WL156; P/N 143A8126-19; FOUND TO BE OUT OF LIMIT ON SRM PART WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR. 9.C.; [02] VERIFIED CORROSION FOUND ON AFT SHIELD FWD CARGO BAY BS 494.5 RBL23 WL156; P/N 143A8126-19; FOUND TO BE OUT OF LIMIT ON SRM PART WILL BE REPAIRED BY REPLACEMENT IAW SRM 51-10-02-0G-0 PAR. 9.C.; [03] LOCATAD AND DRILLED NEW FCB AFT SHIELD FROM BS 492 TO BS 500A RBL 23;WL 156 ITEM#143A8126U31; LOT#1466191;PO#833849; IAW SRM 51-40-05-0G-0; [04] VERIFIED REPLACEMENT PART FOR SHIELD P/N 143A8126-19 DRILLED UP PER DWG 143A0080 AND SRM 51-40-05-0G-0.; [05] OK TO INTALL NEW FCB AFT SHIELD FROM BS 492 TO BS 500A RBL 23;WL 156 ITEM#143A8126U31; [06] OKAY TO INSTALL.; [07] INSTALLED NEW FCB AFT SHIELD FROM BS 492 TO BS 500A RBL 23;WL 156 ITEM#143A8126U31 DWG 143A0080<BR>I.A.W. 51-40-02-0G-0; [08] CORRECTION FOR CORRECTIVE ACTION ITEM 7:<BR>INSTALLED NEW FCB AFT SHIELD FROM BS 492 TO BS 500A RBL 23;WL 156 ITEM#143A8126U31 DWG 143A0080<BR>I.A.W. SRM 51-40-02-0G-0; [09] CORRECTED MEASUREMENTS SECTION; [10] VERIFIED INSTALLED NEW FCB AFT SHIELD FROM BS 492 TO BS 500A RBL 23;WL 156 ITEM#143A8126U31 DWG 143A0080 I.A.W. SRM 51-40-02-0G-0; [11] UPDATED PARTS INFORMATION; [12] VERIFIED ALL WORK COMPLETE

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