T&T: Engine and Fule Log Workbook

[TK Allen]

Someone has discovered a flaw in the engine runtime calculations.  Thanks
for bringing it to my attention.  Entirely my fault for missing that and my
apologies.  I will fix it and put a corrected version out for download.  I
will notify the list as soon as it is available - should be later this
morning or this afternoon.  Sorry about that, folks.

TK Allen