I can assure you 240 IAS at 18k is not hardly 200 TAS.
More like 325 using the common 2% rule.
EDIT
Easy rule of thumb is "deviation is about 2% each 1000 ft".
In this case: 18*2=36, 240/30=8, 240+80= . . . you get the idea.
EDIT2
Or use bombsight table 2 lol
Probably more convenient.
Last edited by Hunin; 03-30-2011 at 05:25 PM.
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