i have a theory of what happened, but i'm unsure. i know it's a cosmetic thing, i'll be resetting your aircrafts values in a few hours [errands to run at the moment]. looking at the code by itself, nothing is standing out at me as terribly wrong other then this age we had a mild snafu with the aging system... my guess is that might be the cause of it. but. yes. definitely looking into it.
Also related: i seem to need to stop depreciation on those with book val <=0 and i need to have any sub-0 book vals reset up to 0

useful to know.