# SDR 98ZZZX651

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N901CF](https://openairdocs.org/aircraft/N901CF), registered now
- Make and model: Doug MD 900
- Registry model: [Doug MD 900](https://openairdocs.org/model/mcdonnell-douglas-helicopter-md-900) (OpenAirDocs)
- Aircraft serial: 90000012
- System (JASC): [6300 · Main Rotor Drive System](https://openairdocs.org/jasc/6300)
- Part: Sensor
- Part number: 8866
- Condition: Failed
- Location: M/R
- Part time: 106 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX651

## Discrepancy

VIBRATION SENSOR UNIT REPEATEDLY TRIGGERS BMS FAULT 4 ON CHANNEL 2.  REPLACED WITH NEW UNIT, CORRECTED PROBLEM.

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