# SDR CA150724006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2015
- Submitted: April 22, 2016
- Operation: General aviation
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft time: 30,069 hours
- Engine: Pwa PT6A67D
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Relay
- Part number: 1093810021
- Condition: Failed
- Location: Ac Generator
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA150724006

## Discrepancy

(CAN) ON TAKEOFF, THE CREW HAD THE NR 2 AC BUS FAIL IN FLIGHT.  THE CREW ELECTED TO RETURN TO DEPARTURE WHERE MAINTENANCE COULD ASSESS THE ISSUE.  THE ACFT LANDED WITHOUT FURTHER INCIDENT.  MAINTENANCE DISCOVERED DURING TROUBLESHOOTING THAT THE NR 2 INVERTER POWER RELAY WAS AT FAULT.  THE RELAY WAS REPLACED WITH A NEW PART AND THE NR 2 INVERTER SYS FUNCTION TESTED SERVICEABLE.  ACFT WAS RETURNED TO SERVICE.

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