# SDR 2021FA0000321

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 18, 2021
- Submitted: November 18, 2021
- Operation: General aviation
- Aircraft: [N508QS](https://openairdocs.org/aircraft/N508QS), registered now
- Make and model: Cessna 120
- Registry model: [Cessna 120](https://openairdocs.org/model/cessna-120) (OpenAirDocs)
- Aircraft serial: 680A0014
- Aircraft time: 3,326 hours, 2,224 cycles
- System (JASC): [5700 · Wing Structure](https://openairdocs.org/jasc/5700)
- Part: None
- Part number: 69226005
- Part serial: NSN
- Condition: Corroded
- Location: Zone 500
- Part time: 3,326 hours, 2,224 cycles
- 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/2021FA0000321

## Discrepancy

CORROSION ON LH WING UPPER SKIN ON SEAM FWD OF I/B FLAP. REFERENCE TEXTRON ENGINEERING MEMO DQ32434M1 DATED 11/16/2021.

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