George Patterson wrote:
As for the absence of an IFR flight plan, the operations
specification did
require that turbojet airplane flights conducted under Part 135 must
be operated
under IFR though there seemed to be some confusion in the ops specs.
However,
the flight, as short as it was, was in constant communication with
air traffic
control during the entire flight, under radar contact, utilizing
flight
following, but, technically, not IFR.

Not filing IFR, as required, is not the same as getting lost. Apples
and oranges. This is would be an intentional violation, IMO.