# SDR 2004FA0000838

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 14, 2004
- Submitted: October 22, 2004
- Operation: General aviation
- Aircraft: [N677MF](https://openairdocs.org/aircraft/N677MF), registered now
- Make and model: Cessna 404
- Registry model: [Cessna 404](https://openairdocs.org/model/cessna-404) (OpenAirDocs)
- Aircraft serial: 4040421
- System (JASC): [5711 · Wing Spar](https://openairdocs.org/jasc/5711)
- Part: Spar Cap
- Part number: 58221661
- Condition: Corroded
- Location: Wing
- Part time: 8,000 hours
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004FA0000838

## Discrepancy

DURING OUR INITIAL INSPECTION OF THIS AIRCRAFT, DISCOVERED SEVERE INTERGARNULAR CORROSION ON UPPER AND LOWER REAR SPAR CAPS.  THE AREA OF CORROSION IS LOCATED INSIDE THE MAIN GEAR WELL ON BOTH LEFT AND RIGHT WINGS.  NOTE:  AIRCRAFT IS OPERATED IN A SALT AIR ENVIRONMENT FOR THE LAST YEAR.

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