I half remember, sometime in the past, there were different costs in turbine powered aircraft that were allowed to be put into the bucket for cost sharing.

Do I remember correctly or incorrectly?

If this a correct memory, what are the additional shareable costs in a turbine powered aircraft?

addendum: My ancient brain has come up with some vague answers.

IE, the hourly payments for engine and airframe maintenance. This was comparable to rental cost, but because it is a defined amount in a turbine totally owned by the pilot, it was quantifiable.

  • $\begingroup$ Are you thinking of 91 Subparts F and K on fractional ownership? There's some stuff in there about cost sharing. $\endgroup$
    – Pondlife
    Mar 22, 2018 at 19:49
  • $\begingroup$ Not fractional ownership. Straight Part 91, sole ownership. The difference between a Cirrus 22 and a Cirrus 50, for example. $\endgroup$
    – Mike Brass
    Mar 22, 2018 at 23:20

1 Answer 1


I give up. I have searched and can find no reference in the FARs concerning this question - just the current one about pr0-rate sharing that we all know and love.

Perhaps the 91F and 91K parts have replaced the vaguely remembered item from the 1980s.

Thank you for the opportunity to ask.


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