# SDR SWAA2022100649125

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2022
- Submitted: October 6, 2022
- Operation: Air carrier
- Aircraft: [N952WN](https://openairdocs.org/aircraft/N952WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36667
- Aircraft time: 39,061 hours, 23,816 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sidewall Support
- Condition: Corroded
- Location: Aft Cargo Bay
- 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/SWAA2022100649125

## Discrepancy

CORROSION ON FLOOR TO SIDEWALL SUPPORT AT AFT CARGO BAY BS727 - BS767 RBL20. / [01] VERIFIED APPLICABILITY SRM 53-60-53-01-2 FOR IDENTIFICATION AND SRM 53-00-53-1A-2 FOR ALLOWABLE DAMAGE.<BR><BR>REMOVED CORROSION ON AFT CARGO BAY TO SIDEWALL SUPPORT AT RBL20 BS 727B +5 - BS727B +7 RBL 20 PER SRM 51-10-02 EVALUATED AS FOLLOW: L=2' W=1' D=0.015'; ORIGINAL THICKNESS 0.040' PER BAC1496-377; REMAINING THICKNESS 0.025'; BLENDED AREA FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 PARA 4A (2) FIGURE 103 DETAIL D.<BR>TOOL ID: ATS1672 S/N: 65092939 DUE:03/23.;[02] INSPECTED ACTION 1 VERIFIED MEASUREMENT TABLE;[03] RECEIVED LOCATED AND DRILLED NEW FLOOR TO SEDEWALL SUPPORT BS 727 - BS 767 RBL 20 AT AFT CARGO BAY <BR> P/N 146A7502-51<BR> I.A.W SRM 51-40-05-0G-0 AND DWG 146A7500.<BR>REMOVAL AND INSTALLATION ACCOMP0LISHED ON CARD AD ID: TTG8Q0049E3B;[04] VERIFIED ITEM 3 CORRECTIVE ACTIONS.<BR>VERIFIED MEASUREMENTS.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.