Thanks Erm,. .Knew I'd seen it somewhere.. .. .CAP413 (2002 Edition) says "When transmitting messages containing flight levels each digit shall be transmitted separately.However,in an endeavour to reduce ‘level busts ’ caused. .by the confusion between some levels (100/110,200/220 etc.),levels which are whole hundreds e.g.FL 100,200,300 shall be spoken as “Flight level (number)HUN DRED ”.The word hundred must not be used for headings.". .. .All good stuff, but still waiting for my units hard copy from Documedia. Probably get it by 2003.. .. .LXGB.. .. .PS - Yes I'm bored, and yes my secondary duty is Docs <img border="0" title="" alt="[Confused]" src="confused.gif" /> <img border="0" title="" alt="[Frown]" src="frown.gif" /> .