# SDR SWAA2021091500108

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 30, 2021
- Submitted: September 15, 2021
- Operation: Air carrier
- Aircraft: [N447WN](https://openairdocs.org/aircraft/N447WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33720
- Aircraft time: 58,733 hours, 34,620 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Shield
- Condition: Corroded
- Location: Bs 494 Rbl 23
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021091500108

## Discrepancy

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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