When you pay to fly on a private jet in the US, the flight should be operated by a company holding an FAA Part 135 certificate. That's the rulebook for charter: it sets higher standards for pilots' training and rest, maintenance and oversight than private flying does. Unfortunately, some flights are sold by people who don't have one. This is called illegal charter, and it's more common than you'd think.
Part 135 vs Part 91, in plain English
- Part 91 covers private flying: an owner flying their own plane, or a company flying its own executives. In general, nobody can sell you a ride under Part 91, apart from a few narrow exceptions.
- Part 135 covers on-demand charter: flying people for money. The operator holds an FAA certificate and a set of operations specifications listing exactly which aircraft, pilots and types of flying it's approved for.
The FAA decides which rules apply by asking who has operational control: who picks the pilots, maintains the aircraft and carries the liability. If you're paying for the flight, that company needs to be a certificated operator.
Why illegal charter matters to you
It's not just paperwork. On an illegal flight:
- Pilots may not meet charter training, testing and rest requirements.
- Maintenance may not meet charter standards.
- Insurance may refuse to pay after an accident, because the flight wasn't what the policy covered.
- Passengers can even end up facing tax liability.
The FAA does go after illegal operators. In one case, in August 2021, it proposed $1.2 million in penalties against five companies at once, for flying without a certificate, untrained pilots and missing operations specifications. For the companies and people running illegal flights, penalties can include losing a certificate and, in serious cases, prison.
Red flags to watch for
Be careful if any of these come up:
- No certificate number for the operator, or they won't share it.
- Separate bills for "the aircraft" and "the pilot" (a classic way to disguise a charter as a lease).
- No federal excise tax on the invoice. Legal domestic US charters normally charge the 7.5% tax.
- A price far below every other quote for the same trip.
- Being asked to tell anyone at the airport that you're "friends" with the owner, or coached on what to say.
- Words like "flight sharing," "air sharing," "time sharing" or "leasing" used to sell you a seat or a flight.
How to check an operator
- Ask for the operator's legal name and Part 135 certificate number. A legitimate broker or operator will give it to you without fuss.
- Ask whether your specific aircraft is on that certificate. An operator can be legal while a particular plane isn't authorized for charter.
- Check the FAA's public list of Part 135 operators and aircraft. Note: the FAA took this list offline in February 2026 to correct errors and restored it around May 2026, but it still contains some outdated entries. Treat it as a helpful check, not the final word.
- When in doubt, call the local FAA office (Flight Standards District Office, FSDO) or use the FAA's illegal charter hotline.
At Summit: we book flights only with FAA Part 135 operators, or, on international trips, with foreign operators that hold the required certificate and US DOT authority. Ask us anytime for the operator's legal name and certificate number; once your operator is confirmed, they also appear under "Operator details" at checkout.
What a charter broker must tell you
Many companies that sell private flights, Summit Jet included, are air charter brokers: they arrange your flight with a certificated operator rather than flying the aircraft themselves. That's completely legal and common, and the US Department of Transportation regulates it under 14 CFR Part 295. Under those rules a broker must:
- Say clearly in its advertising and website that it's a broker, not the operator, and that the flight will be operated by a properly licensed carrier.
- Tell you before you sign the operator's name, the role the broker is playing, and whether it carries liability insurance covering you (and the limits).
- On request, tell you about any business relationship with the operator, the total price including taxes, and any third-party fees you'll pay directly.
If key information is unknown and the broker can't provide it in time, you're entitled to cancel for a full refund.
What about safety ratings?
Some operators also pay for voluntary third-party safety audits. You'll see these names:
- ARGUS: ratings from Gold (a desk review of records) up to Platinum, which involves an on-site audit.
- Wyvern: "Wingman" certifications based on its own safety standard.
- IS-BAO: an international business aviation standard with three stages, from "safety system in place" to "fully built into the culture."
These ratings are a good extra sign. But a rating is on top of the FAA certificate, not instead of it.
Questions & answers
What is a Part 135 operator?
A company with an FAA certificate to fly passengers for compensation on demand (charter). It has operations specifications that list the aircraft and types of flights it's approved for.
Is it legal to pay to fly on a Part 91 flight?
Generally no. Part 91 is private flying; only narrow exceptions allow any payment. If you're buying a flight, it should be on a Part 135 (or equivalent) operator.
Is a charter broker legal?
Yes. Brokers are regulated by the US Department of Transportation and must clearly say they're brokers and tell you the operator's name before you contract.
How can I check if a charter operator is certified?
Ask for the legal name and certificate number, confirm your aircraft is on the certificate, check the FAA's public Part 135 list, and contact the local FAA office if anything doesn't add up.
What does an ARGUS or Wyvern rating mean?
They're voluntary safety audits by private companies. They're a useful extra signal, but they don't replace the FAA certificate.
- FAA Chief Counsel interpretation on operational control (2014)
- NBAA: the risks of flying with illegal charter operators
- FAA flyer: is your charter flight safe and legal?
- FAA proposes $1.2M in penalties for alleged illegal charter flights
- NATA: FAA's Part 135 operator list temporarily offline
- Private Jet Card Comparisons: FAA restores Part 135 list
- 14 CFR 295.23: broker advertising
- 14 CFR 295.24: broker disclosures
- NBAA: Part 295 air charter broker Q&A
- ARGUS: how its audits work
- IBAC: IS-BAO brochure 2026



