Regulation Text
(a) Except as provided in § 91.501(b), when a nonprogram aircraft is used to substitute for a program flight, the flight must be operated in compliance with part 121 or part 135 of this chapter, as applicable.
(b) A program manager who holds a certificate under part 119 of this chapter may conduct a flight for the use of a fractional owner under part 121 or part 135 of this chapter if the aircraft is listed on that certificate holder's operations specifications for part 121 or part 135, as applicable.
(c) The fractional owner must be informed when a flight is being conducted as a program flight or is being conducted under part 121 or part 135 of this chapter.
The short answer
(14 CFR § 91.1007) Except as provided in § 91.501(b), when a nonprogram aircraft substitutes for a program flight it must be operated under part 121 or 135, a part 119 program manager may fly for an owner under part 121 or 135 if the aircraft is on its operations specifications, and the owner must be told which set of rules applies.
Research Notes
Common Questions
What rules apply when a nonprogram aircraft substitutes for a program flight?
Except as provided in § 91.501(b), the substitute nonprogram aircraft must be operated under part 121 or part 135, as applicable.
“Except as provided in § 91.501(b), when a nonprogram aircraft is used to substitute for a program flight, the flight must be operated in compliance with part 121 or part 135 of this chapter, as applicable.” — 14 CFR § 91.1007(a)
Must a fractional owner be told how their flight is being conducted?
Yes—the owner must be informed whether the flight is a program flight or is being conducted under part 121 or part 135.
“The fractional owner must be informed when a flight is being conducted as a program flight or is being conducted under part 121 or part 135 of this chapter.” — 14 CFR § 91.1007(c)
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