Senator Abetz asked the Minister representing the Minister for Defence, upon notice, on 1 August 2011: In regard to the special purpose aircraft: (1) For the past 6 months, on what dates did the Prime Minister fly to Darwin via a special purpose aircraft. (2) For each occasion, what was the length of time: (a) the aircraft was on the tarmac; and (b) the engines were kept running while the aircraft was on the tarmac.