Rotorcaptain..
You may exceed the 14 hour limit as imposed by the FARS.. It all revolves around the "Planned completion time" of the assignment.
Unneccesary delays etc etc, as long as you then do not fly fatigued [Feds will attempt to get you on 91.13(a)].
BTW the limit is not the 14 hours, but the 10 hours of rest required in the previous 24 hour period..
And yes I do know as I have received several legal interpretations of far 135,267 from the FEDS regarding this issue...
Fly safely
C4
Ps. I was not trying to piss you off..