# SDR SWAA2023052229353

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2023
- Submitted: May 22, 2023
- Operation: Air carrier
- Aircraft: [N7835A](https://openairdocs.org/aircraft/N7835A), registered now
- Make and model: Boeing 737752
- Aircraft serial: 34294
- Aircraft time: 57,926 hours, 30,275 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Zn 100 Fus Lower
- 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/SWAA2023052229353

## Discrepancy

CORROSION FOUND AFT CARGO RH 'Z' CHANNEL FROM STA 727 TO STA 767 RBL 21 WL 155.5 HAS MULTIPLE SPOTS OF CORROSION.<[01] REMOVED CORROSION AT AFT CARGO RH 'Z' CHANNEL FROM STA 727 TO STA 767 RBL 21 WL 155.5 AS PER SRM 51-10-02-0G-0. ORIGINAL TICKNESS 0.040'; MATERIAL LOST 0.014'; MATERIAL REMAINING 0.026'. FOUND OUT OF LIMITS AS PER SRM 53-00-53-1A-2. INSTALLED NEW AFT CARGO R/H 'Z' CHANNEL PER B 737-700 SRM 51-40-02-0G-0 AND DWG 146A7502.;[02] VERIFIED AND INSPECTED REMOVED CORROSION AT AFT CARGO RH 'Z' CHANNEL FROM STA 727 TO STA 767 RBL 21 WL 155.5 AS PER SRM 51-10-02-0G-0. ORIGINAL TICKNESS 0.040'; MATERIAL LOST 0.014'; MATERIAL REMAINING 0.026'. FOUND OUT OF LIMITS AS PER SRM 53-00-53-1A-2. INSTALLED NEW AFT CARGO R/H 'Z' CHANNEL PER B 737-700 SRM 51-40-02-0G-0 AND DWG 146A7502.

---
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.