Actually, I think by the rules, tank engines should have to make the 2d6 >= 10 roll to be considered damaged rather than destroyed. However, tank engines are also not listed under the repairable parts. So I think the correct answer is that tank engines should be destroyed.
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This may require a rules clarification because vee engines don't take crit hits in the same way.
Actually, I think by the rules, tank engines should have to make the 2d6 >= 10 roll to be considered damaged rather than destroyed. However, tank engines are also not listed under the repairable parts. So I think the correct answer is that tank engines should be destroyed.