# SDR SWAA2021021542078

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 13, 2021
- Submitted: February 15, 2021
- Operation: Air carrier
- Aircraft: [N439WN](https://openairdocs.org/aircraft/N439WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29834
- Aircraft time: 59,583 hours, 35,303 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Beam
- Condition: Corroded
- Location: Fuselage
- 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/SWAA2021021542078

## Discrepancy

***CORROSION*** CORROSION ON BS 986 BEAM UPPER CHORD FWD FLANGE AT RBL44 WL 208 / REPAIRED DAMAGE ON BS986 BEAM UPPER CHORD FWD FLANGE AT RBL 44; WL 208 PER ER 21-01073 REV IR AND EA 21-153-00181 REV IR.

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