# SDR SWAA2022102858323

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2022
- Submitted: October 28, 2022
- Operation: Air carrier
- Aircraft: [N8507C](https://openairdocs.org/aircraft/N8507C), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 41531
- Aircraft time: 20,008 hours, 9,579 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- 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/SWAA2022102858323

## Discrepancy

FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE HAS CORROSION AROUND NUT PLATE HOLE BS500F+7 RBL24.5 WL156 / [01] UPDATED MEASUREMENT TABLE FOR PICTURE OF CORROSION ATTACHED;[02] EVALUATED CORROSION AT BS 500F+7' REMOVED 0.015' IN A AREA OF 1'X1' ORIGINAL THICKNESS 0.040' FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2 USING ATS TOOL ID ATS2678 EXP 4/2023;[03] VERIFIED APPLICABILITY OF SRM 53-00-53-1A-2.;[04] VERIFIED CORRECTIVE ACTIONS 1-3<BR><BR>VERIFIED MEASUREMENTS TABLE<BR><BR>VERIFIED PICTURE OF CORROSION IS ATTACHED TO THE FAULT<BR><BR>VALIDATED APPLICABILITY OF SRM 53-00-53-1A-2.;[05] REMOVED R/H FLOOR TO SIDEWALL SUPPORT AT BS 500A TO 500I PER SRM 51-40-02-0G-0;[06] LOCATED AND DRILLED NEW R/H FLOOR TO SIDEWALL SUPPORT BS 500A TO BS 500I RBL 25 WL 156 PER SRM 51-40-05-0G-0; AND DWG 143A7500. OK TO INSTALL FLOOR TO SIDEWALL SUPPORT;[07] VERIFIED CORRECTIVE ACTION 6.<BR>OK TO INSTALL;[08] INSTALLED R/H FLOOR TO SIDEWALL SUPPORT AT BS 500A TO BS 500I RBL 25 WL 156 PER SRM 51-40-02-0G-0; DWG 143A7501 AND DWG 143A7500;[09] VERIFIED CORRECTIVE ACTION 8;[10] VERIFIED MEASUREMENT TABLE

---
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.