Applicability

This regulation defines when large airplanes, turbojets, and fractional ownership aircraft can operate under Part 91 rules instead of the stricter commercial operating rules (Parts 121, 125, 129, 135, 137).

Key point: These aircraft can use Part 91 rules when *not* conducting common carriage (scheduled airline or charter-for-hire operations).

Permitted operations include ferry flights, training, aerial photography, personal transportation, and company business flights where no profit is made. Companies can transport their own employees, officials, and guests on company aircraft, but generally cannot charge beyond actual operating costs. Time-sharing, interchange, and joint ownership arrangements are allowed under specific conditions.

The regulation also specifies exactly what expenses can be charged for certain operations—including fuel, crew expenses, landing fees, and hangar costs, plus up to 100% of fuel costs as an additional charge.

This matters because it determines whether you need a commercial operating certificate or can operate under simpler Part 91 rules.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*