# SDR HEEA063471

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N911LK](https://openairdocs.org/aircraft/N911LK), registered now
- Make and model: Bolkms BK117B2
- Aircraft serial: 7168
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Indicator
- Part number: 1179405303
- Condition: Malfunctioned
- Location: Triple Tach
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HEEA063471

## Discrepancy

NR 2 N2 INTERMITTENTLY DROPS TO ZERO IN-FLIGHT AND RETURNS TO 100 PERCENT.

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