# SDR 2020FA0000554

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 2020
- Submitted: December 18, 2020
- Operation: General aviation
- Aircraft: [N200CR](https://openairdocs.org/aircraft/N200CR), registered now
- Make and model: Amd FALCON2000EX
- Aircraft serial: 133
- Aircraft time: 6,010 hours, 2,875 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Gcu
- Part number: 129006
- Part serial: 1353
- Condition: Low Voltage
- Location: Rt Generator
- Stage of operation: CR
- How discovered: O
- Nature of condition: H
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2020FA0000554

## Discrepancy

DURING CRUISE FLIGHT AT FL400, WE EXPERIENCED A NR 2 ENGINE GENERATOR CONTROL UNIT "UNDER-VOLTAGE" INDICATION.  THE SYSTEM AUTOMATICALLY COMPLETED A LOAD SHED OF NON-ESSENTIAL ITEMS.  WE FOLLOWED THE CHECKLIST, STARTED THE APU, AND CONTINUED OUR TRIP TO THE DESTINATION.  REPAIRS WERE MADE THE SAME DAY WITH A REPLACEMENT GCU.

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