# SDR SWAA2022060902027

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2022
- Submitted: June 9, 2022
- Operation: Air carrier
- Aircraft: [N477WN](https://openairdocs.org/aircraft/N477WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33988
- Aircraft time: 60,414 hours, 35,826 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Aft Cargo
- 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/SWAA2022060902027

## Discrepancy

CORROSION ON AFT CARGO BAY AFT LOWER BULKHEAD SUPPORT AT BS 947 LBL 8-RBL 21. / [01] UPON FURTHER INVESTIGATION; NO ALLOWABLE DAMAGE LIMITS NOTED ON SRM- PART TO BE REPAIR BY REPLACEMENT I.A.W SRM 51-10-02-0G-0 PARA 9.;[02] REMOVED ACB LOWER BULKHEAD SUPPORT ANGLE AT BS 947.5 LBL 8- RBL 21 PER SRM 51-40-02-0G-0.;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2.;[04] LOCATED AND DRILLED NEW ACB LWR BULKHEAD SUPPORT ANGLE PER SRM 51-40-05 AND DWG 149A8117 REV:- SHT 6.;[05] VERIFIED CORECTIVE ACTION 4.;[06] OK TO INSTALL NEW ACB AFT LOWER BULKHEAD SUPPORT.;[07] OK TO INSTALL NEW ACB AFT LOWER BULKHEAD SUPPORT GIVEN.;[08] INSTALLED LOWER BULKHEAD SUPPORT IAW SRM 51-40-02 AND DWG 149A8117 REV: -;[09] VERIFIED INSTALLATION OF THE AFT CARGO BAY LWR BULKHEAD SUPPORT PER SRM 51-40-02 AND DWG 149A8117 REV: -;[10] WORKSCOPE COMPLETE

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