# SDR 2021F00088

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2021
- Submitted: April 28, 2021
- Operation: General aviation
- Aircraft: [N597QS](https://openairdocs.org/aircraft/N597QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0156
- Aircraft time: 2,368 hours, 1,568 cycles
- Engine: Pwc PW306D1
- Engine time: 2,114 hours, 1,388 cycles
- System (JASC): [8300 · Accessory Gearboxes](https://openairdocs.org/jasc/8300)
- Part: Cover
- Part number: 30B720901
- Condition: Corroded
- Location: Acc Gearbox
- 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/2021F00088

## Discrepancy

AGB AFT COVER CORROSION. ACCOMPLISHED PRATT & WHITNEY DAA2021-340-PW306D1-CN0314 DATED APRIL 22, 2021; DEVIATION LETTER - ENGINE MODEL PW306D1 SERIAL NUMBER CN0313 (TTSN 2114.0 HOURS CYCLES: 1388) - ACCESSORY GEAR BOX TOUCH UP REPAIR.

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