# SDR SWAA2021040807430

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2020
- Submitted: April 8, 2021
- Operation: Air carrier
- Aircraft: [N494WN](https://openairdocs.org/aircraft/N494WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33868
- Aircraft time: 54,277 hours, 32,309 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Aft Cargo
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021040807430

## Discrepancy

CORROSION AFT CARGO COMPMT. BILGE FLOOR SIDE Z CHANNEL FROM STA 727E + 10 TO STA 847 S-26L WL 155.5 MKD DOT 60-032 / REMOVED DAMAGED Z CHANNEL AND REPLACED AT AFT CARGO L/H STA 727E TO STA 847 AS PER B737-700 SRM 51-40-02-0G-0 AND DWG # 146A7502. FOUND DEEP CORROSION AND EXFOLIATION AROUND FASTENERS HOLES.

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