14 CFR § 91.1009 - Clarification of operational control.
(a) An owner is in operational control of a program flight when the owner -
(1) Has the rights and is subject to the limitations set forth in §§ 91.1003 through 91.1013;
(2) Has directed that a program aircraft carry passengers or property designated by that owner; and
(3) The aircraft is carrying those passengers or property.
(b) An owner is not in operational control of a flight in the following circumstances:
(1) A program aircraft is used for a flight for administrative purposes such as demonstration, positioning, ferrying, maintenance, or crew training, and no passengers or property designated by such owner are being carried; or
(2) The aircraft being used for the flight is being operated under part 121 or 135 of this chapter.
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