# SDR SWAA2021090706327

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 11, 2021
- Submitted: September 7, 2021
- Operation: Air carrier
- Aircraft: N755SA
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27871
- Aircraft time: 74,723 hours, 44,099 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Condition: Corroded
- Location: Bs 773
- 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/SWAA2021090706327

## Discrepancy

CORROSION ON WEB AT AFT CARGO BAY BS773 RBL20 WL157 ; / [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 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; [03] REMOVED WEB BS 767-787 RBL20; WL 157 PER SRM 51-40-02-0G-0.; [04] RECEIVED NEW WEB P/N: 146A8123U19 AT AFT CARGO BAY BS 773 RBL 20 WL 157. <BR>LOCATED AND DRILLED NEW WEB IAW. SRM 51-40-05 AND DWG:146A0081. <BR>REQUEST OK TO INSTALL NEW WEB.; [05] VERIFIED CORRECTIVE ACTION 4. <BR><BR>OK TO INSTALL NEW WEB.; [06] INSTALLED NEW WEB P/N: 146A8123U19 AT AFT CARGO BAY BS 773 RBL 20 WL 157. IAW. SRM 51-40-02 AND DWG:146A0081; [07] INSTALLED NEW WEB P/N: 146A8123U19 AT AFT CARGO BAY BS 767-787; RBL 20 WL 157. IAW. SRM 51-40-02 AND DWG:146A0081; [08] VERIFIED CORRECTIVE ACTIONS 6-7<BR><BR>WEB INSTALLED; [09] WEB AT ACB BS773; RBL20; WL157 REPLACED. <BR><BR>NO FURTHER ACTIONS REQUIRED.

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