strike off wastage
 n.— «It could also be expected that one or two aircraft will be routinely lost per 10,000 flying hours, due to what is termed “strike off wastage,” or accidents, in common parlance. The total bill therefore requires a very huge outlay.» —“The plane truth” by PR Chari Daily News & Analysis (India) Nov. 21, 2007. (source: Double-Tongued Dictionary)

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