There were two that I remember... The first helo, which delivered the IMF Mission to Ethan Hunt, was a Eurocopter A-Star. The second helo, used as part of the mission, was a BK117.
Bell AH-1 Cobra
Mission: Impossible, Mission: Impossible II, Mission: Impossible III, and Mission Impossible-Ghost Protocol.
Mission Impossible - 1988 The Haunting 1-9 was released on: USA: 28 January 1989
Mission Impossible - 1988 Spy 1-14 was released on: USA: 18 March 1989
Mission Impossible - 1966 The Trial 1-18 was released on: USA: 28 January 1967
there are 4 mission impossible movies
Mission: Impossible, Mission: Impossible II, Mission: Impossible III, and Mission Impossible-Ghost Protocol.
Mission Impossible - 1966 Pilot 1-1 was released on: USA: 17 September 1966
Get Smart - 1965 The Impossible Mission 4-1 is rated/received certificates of: Argentina:Atp
Mission Impossible - 1988 The Wall 1-6 was released on: USA: 11 December 1988
Mission Impossible - 1988 The Fortune 1-12 was released on: USA: 18 February 1989
Mission Impossible - 1988 The Devils 1-15 was released on: USA: 25 March 1989
Mission Impossible - 1988 The Lions 1-10 was released on: USA: 4 February 1989
Mission Impossible - 1988 The Condemned 1-4 was released on: USA: 20 November 1988
Mission Impossible - 1966 Memory 1-2 was released on: USA: 24 September 1966
Mission Impossible - 1966 Wheels 1-7 was released on: USA: 29 October 1966
Mission Impossible - 1988 Holograms 1-3 was released on: USA: 6 November 1988
Get Smart - 1965 The Impossible Mission 4-1 was released on: USA: 21 September 1968