# SDR SWAA2020061281079

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2020
- Submitted: June 12, 2020
- Operation: Air carrier
- Aircraft: [N477WN](https://openairdocs.org/aircraft/N477WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33988
- Aircraft time: 55,517 hours, 32,839 cycles
- System (JASC): [5347 · Fuselage, Seat/Cargo Attach Fittings](https://openairdocs.org/jasc/5347)
- Part: Cargo Track
- Part number: 146A750125
- Condition: Corroded
- Location: Cargo Bay
- 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/SWAA2020061281079

## Discrepancy

CORROSION ON AFT CARGO BAY CARGO TRACK AROUND FASTENER HOLE AT BS 788; RBL 14 WL 154.  CORROSION ON AFT CARGO BAY CARGO TRACK P/N 146A7501- 25 FOUND TO BE OUT OF LIMITS DUE TO PROXIMITY TO FASTENER HOLES IAW SRM 53-00-53-1A-2 FIG 103 DETAIL (D); REMOVED AND REPLACED AFT CARGO BAY CARGO TRACK BS747+12-887 RBL14 WL154 IAW SRM 53-00-53-2R-3 AND DWG 146A7500.

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