# SDR SWAA2020041532523

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2020
- Submitted: April 15, 2020
- Operation: Air carrier
- Aircraft: [N926WN](https://openairdocs.org/aircraft/N926WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36629
- Aircraft time: 40,878 hours, 24,621 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Threshold
- Condition: Corroded
- Location: Fuselage
- 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/SWAA2020041532523

## Discrepancy

***CORROSION*** ON SUBTHRESHOLD WEB AT FWD CARGO BAY BS440- BS494 RBL25 WL156. / REMOVED AND REPLACED FWD CARGO BAY SUBTHRESHOLD ASSY B.S. 440-494 LBL 25 WL 156 P.O. # 777761/1 PER SRM 51-40-05-0G-0 SRM 51-40-02-0G-0 AND DWG 143A8330

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