# SDR CA971231004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 17, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Snias AS350B
- Engine: Tmeca ARRIEL1B
- System (JASC): [7714 · Engine RPM Indicating System](https://openairdocs.org/jasc/7714)
- Part: Tach Box
- Part number: 0177555170
- Condition: Shorted
- Location: Engine Bleed
- Stage of operation: CL
- Nature of condition: J, R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA971231004

## Discrepancy

(CAN) TACH BOX CYCLED BLEED VALVE OPEN AND CLOSED A COUPLE OF TIMES BEFORE STAYING OPEN.  THIS HAPPENED SPORADICALLY AND AT LOW ALTITUDE, COULD NOT GET FULL POWER.

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