Np (Free Turbine) Tachometer Generator Kit
The Arriel 1B engine was not supplied with the Np Tachometer Generator for the Eurocopter AS350B and BA. After installing the kit on the engine gear box, the generator kit provides a means for the Arriel 1B engine to produce the required Np Signal. This signal is then utilized by the Arriel 1 cycle counter to allow the AKV Cycle Counter to monitor and record the required Np Cycles. Furthermore, it also produces the required signal to drive the AKV Dual Tachometer Indicator (sold separately) in place of the Eurocopter rotor only indicator.
