What Makes an Aircraft Operator FAA Part 135 Certified
If you've started researching private jet charter, you've probably seen the phrase "FAA Part 135 operator" come up again and again. It sounds like dense regulatory language, but it's actually one of the most important things you can understand before you book a flight. It's the difference between an aircraft and crew that have been vetted, audited, and held to federal safety standards — and one that hasn't. At Studio Jet, every aircraft we arrange is flown by an operator holding a valid Part 135 certificate (or Part 121, or the foreign civil aviation authority equivalent for international trips). Here's what that actually means, and why it should matter to you.
Part 135 Is a Certificate, Not Just a Rule
FAA Part 135 refers to the section of federal aviation regulations that governs on-demand commuter and charter operations. To legally sell seats or whole aircraft for hire, a company must hold an Air Carrier Certificate issued under this part. Getting that certificate isn't a formality — it's a multi-stage process that typically takes the FAA many months (often longer) to complete, because the agency is evaluating the operator's manuals, training programs, maintenance systems, and management structure from the ground up before a single paying passenger ever boards an aircraft.
This is fundamentally different from Part 91, which governs private, non-commercial flying. A Part 91 operator can fly an airplane they own for personal use with far less oversight. When you charter a flight, you want a Part 135 (or larger Part 121 airline-level) certificate behind the operator — not a private registration being used informally for hire.
What the FAA Actually Scrutinizes
Earning and keeping a Part 135 certificate means an operator has demonstrated ongoing compliance across several areas the FAA continues to monitor:
- Pilot qualification and training — crews must meet experience minimums for the specific aircraft type and complete recurrent training on a regular cycle, not just at hiring.
- Maintenance programs — aircraft are maintained under an FAA-approved program with documented inspections, not just manufacturer suggestions followed loosely.
- Operations specifications — each certificate includes "op specs" detailing exactly which aircraft, which routes, which types of operations (day/night, weather minimums, international) the carrier is authorized to fly.
- Duty and rest rules — flight crews are subject to limits on how long they can fly and how much rest they must have beforehand.
- Drug and alcohol testing programs — commercial crews operate under a federally mandated testing program that Part 91 private pilots are not required to follow.
None of this is one-and-done. The FAA conducts ongoing surveillance of certificated operators, and the certificate can be amended, suspended, or revoked if standards slip. That continuous oversight is exactly why Part 135 certification is treated as the baseline credential in the charter industry.
Why This Matters More Than the Interior of the Jet
It's easy to get drawn into comparing cabin finishes or Wi-Fi speeds, but the operator behind the tail number is the single most important factor in a charter flight. A Gulfstream V/550 flown by a disciplined, well-audited Part 135 operator with a strong safety culture is a far better choice than a similar aircraft operated by a company cutting corners on maintenance or crew rest. The certificate is the floor, not the ceiling — some operators go well beyond minimum requirements with additional third-party safety audits, more conservative weather minimums, or more experienced pilot staffing than the regulations strictly require. Part of what a good broker does is know which operators in a given market consistently exceed that floor.
How Studio Jet Builds This Into Every Trip
Studio Jet is a charter broker — we don't own or operate aircraft ourselves. That's actually an advantage for you: because we're not tied to a single flight department or a limited in-house fleet, we have access to a wide range of aircraft across our network, from turbo-props like the King Air 350 and Pilatus PC-12 up through light jets like the Phenom 300 and Lear 45, mid-size and super mid-size aircraft like the Citation Latitude, Citation X, Challenger 300, and Gulfstream 200, and large-cabin aircraft including the Challenger 605, Falcon 900, and Gulfstream IV/450 and VI/650. Every one of these aircraft is flown by a properly certificated Part 135 (or equivalent) operator — that's a non-negotiable part of how we build every quote.
With 17+ years arranging charter flights, we've developed a clear sense of which operators hold up their end of the bargain beyond the paperwork — consistent maintenance discipline, experienced crews, and transparent communication when weather or mechanical issues require a plan B. Our job is to match you with the right aircraft for your trip and make sure the operator behind it meets our safety standards, not just the regulatory minimum.
Questions Worth Asking Before You Book
Whether you charter through a broker or go direct, it's reasonable to ask who actually holds the Part 135 certificate for the flight, how long they've operated the specific aircraft type, and what their maintenance and crew training programs look like. A transparent operator (or broker) should be able to answer these without hesitation. Pricing is another area where transparency matters — charter costs vary by aircraft category, route, season, and availability, so any reputable quote should walk you through what's included rather than leaving you guessing.
Understanding Part 135 certification is one of the best tools you have as a charter customer — it tells you who's actually accountable for your safety in the air. If you'd like to see which Part 135-certified aircraft and operators are available for your next trip, our team is ready to help. Call Studio Jet at 818-769-3535 or visit our request a quote page, and a dedicated charter specialist will put together options built around your schedule, your route, and your safety standards.