The present used aircraft pricing system doesn't seem to account for C and D checks timing.
See today's DOFM used market (10-Feb-1995), pick B727-200Adv, 19 birds are listed, organize it by age, and compare two similar aged aircraft, say 15 years old, one with almost expired heavy check, the other not:
(a) 15y old, C check expires in less than one month, D check expires in ten months, "fair price to be between 16.1m - 18.9m"
(b) 15y old, C check expires in ten months, D check expires in over 6 years, and... "fair price to be between 16.9m - 19.8m"
Similar "fair price",
But the D check alone costs more than 5m... So the "fair price" should be around 4m lower on (a).
I am missing something here?
Is this a bug?