# SDR SWAA2023061649890

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2023
- Submitted: June 16, 2023
- Operation: Air carrier
- Aircraft: [N8535S](https://openairdocs.org/aircraft/N8535S), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 63596
- Aircraft time: 19,603 hours, 9,695 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Part number: UNKNOWN
- 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/SWAA2023061649890

## Discrepancy

CORROSION FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT PLATE MULTIPLE AREAS AROUND NUT PLATE HOLES BS500A TO BS500I RBL22 WL156<[01] EVALUATED CORROSION AT ALL LOCATIONS; FOUND DEEPEST LOCATION TO BE AT BS 500D+8' 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 ATS 2473 DUE 08/2023;[02] VERIFIED CORRECTIVE ACTION STEP 1.;[03] REMOVED DAMAGED AREA OF FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT BS500A TO BS500G +10' RBL22 WL156 NO CORROSION FOUND ON SECTION OF BS500G +10' TO BS 500I RBL22 WL156 IAW EA M-22-153-01550 AND SRM 53-00-53-2R-5 REP.5.;[04] FABRICATED;LOCATED AND DRILLED NEW SECTION OF FWD CARGO BAY R/H FLOOR TO SIDEWALL SUPPORT BS500A TO BS500G +10' RBL22 WL156 AND SPLICE DOUBLER BS500A TO BS500G +5' TO 15' RBL22 WL156 MATERIAL USED FOR BOTH PARTS BAC1496-444 7075 T62 CLAD LOT# 1524635-1 IAW EA M-22-153-01550 AND SRM 53-00-53-2R-5 REP.5.

---
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.