# SDR 4NSA2019FA0000067

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2019
- Submitted: March 13, 2019
- Operation: Air carrier
- Aircraft: [N516N](https://openairdocs.org/aircraft/N516N), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500397
- Aircraft time: 936 hours, 782 cycles
- Engine: Pwc PW535E
- Engine time: 936 hours, 782 cycles
- System (JASC): [2435 · Starter-Generator](https://openairdocs.org/jasc/2435)
- Part: Starter Gen
- Part number: 400SG180Q
- Part serial: 500653XL
- Condition: Shorted
- Location: Rt Engine
- Part time: 936 hours, 782 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/4NSA2019FA0000067

## Discrepancy

DURING CRUISE, FLIGHT CREW NOTICED A MODERATE VIBRATION COMING FROM THE BACK OF THE AIRCRAFT. AFTER FURTHER INVESTIGATION, THE CREW DETERMINED THAT THE VIBRATION WAS COMING FROM THE RT NACELLE. SHORTLY AFTER, THE CREW RECEIVED A RT GEN FAIL CASS MESSAGE AND THE RT GENERATOR DROPPED OFFLINE. CREW DECLARED AN EMERGENCY AND DIVERTED INTO AEX.

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