this is a sport clue not A.A. but large in aerospace 8 letters

[CrosswordQueen]

thanks in advance

[Dinkypuzzled]

Could it be 'national ? (anag. of 'not a.a. + L. in)

[quinie]

large in aerospace could be OS. Not A.A. I thought could be RAC but lacrosse is the only game with these letters ( I think)-left with l,s and e so it's back to the drawing board.