# SDR SWAA2021091542895

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 2, 2021
- Submitted: September 15, 2021
- Operation: Air carrier
- Aircraft: [N491WN](https://openairdocs.org/aircraft/N491WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33867
- Aircraft time: 53,758 hours, 31,898 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Shield
- Condition: Corroded
- Location: Bs 847-867
- 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/SWAA2021091542895

## Discrepancy

CORROSION ON AFT SHIELD AT AFT CARGO BAY BS847-867 RBL21 WL165. ; / [01] EVALUATED CORROSION; FOUND TO BE OUT OF LIMITS DUE TO NO LIMITS IN THE SRM AND REQUIRES REPLACEMENT PER SRM 51-10-02-0G-0; [02] VERIFIED CORRECTIVE ACTION 1 PER SRM 51-10-02-0G-0; [03] REMOVED AFT SHIELD IN AFT CARGO BAY BS 847-867 RBL 21; WL 165 PER SRM 51-40-02-0G-0.; [04] LOCATED; DRILLED; DEBURRED NEW AFT SHIELD BS 847-867 RBL21; WL 165 PER SRM 51-40-05-0G-0; BOEING DWG 146A0081.; [05] VERIFIED CORRECTIVE ACTION #4.; [06] OK TO INSTALL; [07] OK TO INSTALL ACB AFT SHIELD; [08] INSTALLED AFT SHIELD IN AFT CARGO BAY BS 847-867 RBL 21; WL 165 PER SRM 51-40-02-0G-0 AND DWG 146A0081.; [09] VERIFIED INSTALLATION OF AFT SHIELD IN ACB BS 847-867; RBL 21; WL 165; PER SRM 51-40-02-0G-0 AND DWG 146A0081.; [10] VERIFIED ALL WORK COMPLETE THIS TASK

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