# SDR SWAA2020041431566

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2020
- Submitted: April 14, 2020
- Operation: Air carrier
- Aircraft: [N427WN](https://openairdocs.org/aircraft/N427WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29831
- Aircraft time: 61,697 hours, 36,249 cycles
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar
- Condition: Corroded
- Location: Lt Wing
- 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/SWAA2020041431566

## Discrepancy

***CORROSION*** EVIDENCE OF CORROSION AT LEFT WING FRONT SPAR WEB AT IFSS 119 COMMON TO BOOST PUMP UPPER BONDING JUMPER FASTENER HOLE / CORROSION AT LEFT WING FRONT SPAR WEB AT IFSS 119 COMMON TO THE BOOST PUMP UPPER BONDING JUMPER FASTENER HOLE WAS REPAIRED IAW ATS ER 20-02244 REV IR DATED 08APR20 AND EA 20-157-00204 REV IR.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.