# SDR CHQA20130306069

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2013
- Submitted: March 11, 2013
- Operation: Air carrier
- Aircraft: N372SK
- Make and model: Emb EMB-135KL
- Registry model: [EMB EMB-135KL](https://openairdocs.org/model/embraer-emb-135kl) (OpenAirDocs)
- Aircraft serial: 145538
- Aircraft time: 27,396 hours, 23,542 cycles
- Engine: Rroyce AE3007A13
- Engine time: 18,146 hours, 18,077 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 51545002A
- Part serial: Y1506
- Condition: Failed
- Location: Nr 1
- Part time: 22,351 hours, 17,212 cycles
- Stage of operation: CR
- 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/CHQA20130306069

## Discrepancy

CREW REPORTED THAT THEY RECEIVED A GENERATOR 1 AND GENERATOR 3 OFF BUSS MESSAGED DURING FLIGHT.  THE CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT.  MAINTENANCE REPLACED THE NUMBER 1 AND NUMBER 3 GENERATOR CONTROL UNITS.  OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.

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