The correct answer is option 1: Chetak is a single engine turboshaft helicopter of Russian origin. This statement is not correct because the Chetak is actually a single-engine turboshaft helicopter of French origin. It is a variant of the famous Aérospatiale Alouette III helicopter, which was manufactured under license in India by Hindustan Aeronautics Limited (HAL).

Option 2 states that the SU-30 is a twin-engine fighter of Russian origin, which is correct. The SU-30 is an advanced multirole fighter aircraft developed by Russia`s Sukhoi Aviation Corporation.

Option 3 states that the Mirage-2000 is a multi-role fighter of French origin, which is also correct. The Mirage-2000 is a highly capable fighter aircraft produced by France`s Dassault Aviation.

Option 4 states that the MiG-29 is a twin-engine fighter aircraft of Russian origin, which is again correct. The MiG-29 is a high-performance air superiority fighter developed by the Soviet Union.

In summary, the incorrect statement is option 1, as the Chetak helicopter is of French origin, not Russian.