# SDR SIMA20160130001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2016
- Submitted: February 1, 2016
- Operation: Air carrier
- Aircraft: [N608LM](https://openairdocs.org/aircraft/N608LM), registered now
- Make and model: Emb EMB-145
- Registry model: [EMB EMB-145](https://openairdocs.org/model/embraer-emb-145) (OpenAirDocs)
- Aircraft serial: 145068
- Aircraft time: 42,043 hours, 35,298 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 51545002A
- Part serial: 98143
- Condition: Failed
- Location: Nr 4
- Stage of operation: UK
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20160130001

## Discrepancy

ON FINAL WE TURNED THE APU ON IAW MEL 24-4, ONCE APU ON LINE, RECVD GEN 1 - 4 OFF BUS, SHORTLY AFTER WE LOST EICAS FOR 5 - 10 SECONDS, GEN 1 WAS SHOWING 7.4 VOLTS 0 A.  SUSPECT NR 4 GCU.  R & R GCU IAW AMM 24-31-02.  PERFORMED OPERATIONS CHECK IAW AMM 24-31-00.  OPERATIONS CHECKED GOOD.

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