The Cseries was a write down the lear was a WRITE OFF. Now that project was retarded, I have to admit there is no justifying spending 2.6B on a mid size jet. For that kind of dosh you would be able to deliver a supersonic jet.You originally said 'write-off' NB, not 'write-down'. The latter is an adjustment to the recorded book value but the former is the elimination of the entire recorded amount.