# SDR SWAA2024073005906

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 2024
- Submitted: July 30, 2024
- Operation: Air carrier
- Aircraft: [N478WN](https://openairdocs.org/aircraft/N478WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33989
- Aircraft time: 66,062 hours, 39,438 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Zone 100
- 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/SWAA2024073005906

## Discrepancy

CORROSION FWD CARGO BAY L/H FLOOR TO SIDEWALL SUPPORT PLATE MULTIPLE AREAS AROUND NUT PLATE HOLES BS500 TO BS500D LBL22 WL156<[01] EVALUATED CORROSION ON L/H FLOOR TO SIDEWALL SUPPORT BETWEEN BS 500 TO BS 500D LBL22 WL156; FOUND TO BE OUT OF LIMITS. REMOVED; FABRICATED; AND INSTALLED NEW SECTION OF FLOOR TO SIDEWALL SUPPORT AT BS 480+8' TO BS 500D LBL22 WL 156; AND 1 SPLICE AT BS 480+8' PER SRM 53-00-53-1A-2; SRM 53-00-53-2R-5 REPAIR 5; SRM 51-40-02-0G-0; SRM 51-40-05-0G-0; DWG 143A7500 REV: -.;[02] VERIFIED CORRECTIVE ACTION 1

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