# SDR 2021F00225

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2021
- Submitted: August 10, 2021
- Operation: General aviation
- Aircraft: [N679QS](https://openairdocs.org/aircraft/N679QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0257
- Aircraft time: 754 hours, 488 cycles
- Engine: Pwc PW306D1
- Engine time: 754 hours, 488 cycles
- System (JASC): [8300 · Accessory Gearboxes](https://openairdocs.org/jasc/8300)
- Part: Gearbox
- Part number: 30B720801
- Condition: Corroded
- Location: Lt Accessory
- Part time: 754 hours, 488 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/2021F00225

## Discrepancy

THE ACCESSORY GEARBOX IS CORRODING ON THE MOUNT PADS AND EXTERNAL SURFACES. REPAIRED IAW PWC MM PART NO. 30B7302 REV. 17.1. A REINSPECTION IS REQUIRED AT EVERY AIRCRAFT MINOR INSPECTION UNTIL A PERMANENT REPAIR IS PERFORMED.

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