# SDR CA010302012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2001
- Submitted: March 13, 2001
- Operation: General aviation
- Make and model: Bolkms BK117A4
- Engine: Lyc LTS101650B1
- System (JASC): [6240 · Main Rotor Indicating System](https://openairdocs.org/jasc/6240)
- Part: Indicator
- Part number: 1179405303
- Condition: Faulty
- Location: Triple Tach
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA010302012

## Discrepancy

(CAN) NR (ROTOR RPM) NEEDLE STARTED TO READ LOW. PILOTS RECOGNIZED THIS AS AN INDICATION PROBLEM. PILOTS LANDED AT BASE WITHOUT INCIDENT. PROBLEM WAS CORRECTED BY INSTALLING A SERVICEABLE TACHOMETER.

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