If I can add my two-penneth as well..
...Why 10,000 feet? In the US and areas where the TL is 18,000 as standard I can understand, but until Europe is brought in line with other countries why don't we descend to FL100, or FL90? I imagine the selection of FL90, especially in the UK, is more helpful to ATC rather than flying around at some equivalent to FL93 and screwing up their RVSM separation. Even if the QNH is 980 you are protected at FL90 from reaching a cab alt above 10,000"?
Just something i've been mulling over..
EDIT: Just realised RAT 5 has written a similiar point to mine - ATC input would be interesting.
Last edited by MrHorgy; 23rd Jul 2013 at 23:14.