# SDR YV3R2019021100011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2019
- Submitted: February 11, 2019
- Operation: General aviation
- Filed by: [Robinson Helicopter Company Inc, repair station YV3R012M](https://openairdocs.org/faa-repair-station/YV3R012M/robinson-helicopter-company-inc.md) (OpenAirDocs)
- Aircraft: [N4043P](https://openairdocs.org/aircraft/N4043P), registered now
- Make and model: Robsin R44RAVENII
- Aircraft serial: 14214
- Aircraft time: 109 hours
- Engine: Lyc IO540AE1A5
- Engine time: 109 hours
- System (JASC): [2436 · DC Regulator](https://openairdocs.org/jasc/2436)
- Part: Control Unit
- Part number: VR515GA1
- Part serial: 80Q78440
- Condition: Malfunctioned
- Location: Electrical Sys
- Part time: 109 hours
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YV3R2019021100011

## Discrepancy

CUSTOMER REPORTED HE WAS UNABLE TO ADJUST SYSTEM VOLTAGE WITH THE ALTERNATOR CONTROL UNIT.

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