The head of the coalition's aviation review promised to lay the ground for the next government to get off to a "flying start" with airport expansion after the 2015 general election.
Sir Howard Davies, who has been asked by ministers to examine ways of increasing aviation capacity, acknowledged criticism that his commission was a way of kicking the highly contentious issue into the long grass.
He said he would not be setting out a preferred option before the next election but was trying to "make best use of (his) time in the long grass".
We will be looking at all the options there are and trying to narrow them down to a small number that look feasible and plausible to us.
All options for airport expansion are "back on the table", the man charged by the Government with recommending future aviation policy said.
Sir Howard Davies, who has been charged with interring the issue of airport expansion in the south east, has outlined his role.