ARGUS vs Wyvern: what private jet safety ratings actually check

ARGUS vs Wyvern: the short version

ARGUS and Wyvern are independent companies that audit private jet charter operators, and an operator pays to be assessed by them. Neither is a regulator. Neither can make a flight legal or illegal. What they do is look harder at an operator than the law strictly requires, and then publish the result in a form a passenger can check. That matters because on private jet charter flights you rarely meet the operator before you board, and the company selling the seat is often not the one flying it.

The difference between them is mostly one of method. ARGUS runs a rating ladder: an operator starts at Gold on the strength of a desk-based review of its history, pilots and operational control, then climbs through Gold Plus, Platinum and Platinum Elite as on-site audits and ongoing monitoring are added. Wyvern certifies operators to its own Wingman Standard, and adds something ARGUS does not lead with: the PASS report, which checks the specific pilots and aircraft lined up for a specific trip. IS-BAO, the third name you'll see, is different again. It is a code of practice run by the International Business Aviation Council that measures how mature an operator's safety management system is, in three stages.

All three sit on top of the one credential that is not optional. In the UK, any operator carrying paying passengers must hold an Air Operator Certificate (AOC) from the Civil Aviation Authority. A badge without an AOC behind it is worthless; an AOC without a badge is legal but tells you less. Our wider guide to what to look for in private jet charter companies covers pricing and transparency; this page goes deep on the safety credentials alone.

What ARGUS, Wyvern and IS-BAO each check

The table below summarises each programme from its own published material. Tier counts include every level the body publishes for charter operators.

Sources: ARGUS auditing services, Wyvern audits and assessments, IBAC on IS-BAO, UK CAA Air Operator Certificates. Checked at the time of writing; programmes change, so confirm on the official site.

Read across the rows and the point becomes clear: these are not three versions of the same test. ARGUS and Wyvern audit the operator as a business. IS-BAO grades how well safety is managed day to day. The AOC is the licence to trade. A strong operator might hold two or three of them; a perfectly legal one might hold none.

ARGUS Gold, Gold Plus and Platinum: what each level means

ARGUS publishes a set of base requirements that every rated operator must meet. According to its auditing services page, they are: an operating certificate held for at least one year, at least one turbine aircraft on that certificate, an in-depth historical safety analysis, a pilot background check, and validation of the aircraft's operational control. ARGUS's own explainer on its audit products adds that its analysts check accident, incident and enforcement databases, and confirm that flights are crewed by two qualified pilots.

• ARGUS Gold is those base requirements and nothing more. It is a meaningful screen, but it is a desk-based one. Nobody from ARGUS has necessarily visited the operator.
• ARGUS Gold Plus adds an ARGUS on-site audit. The published criteria describe it as an on-site audit "with uncorrected findings": the operator has been visited, but problems found have not yet been shown to be fixed.
• ARGUS Platinum requires an on-site audit with the findings corrected, a functioning safety management system and an emergency response plan.
• ARGUS Platinum Elite keeps the Platinum requirements and adds maintenance and operations reviews every six months, plus company-wide reviews every two years.

ARGUS Platinum, in more detail

Platinum is the rating most operators lead with, and it is worth knowing what it involves. ARGUS describes it as a two-day on-site event examining the operator's safety management system, emergency response planning, operational control, administrative controls, training and maintenance programmes. Findings must be corrected, and the corrective action is accepted by a separate auditor. To keep the rating, the operator undergoes a renewal audit every two years. Platinum Elite replaces that two-year cycle with continuous monitoring.

The practical reading: if an operator says "ARGUS-rated", ask which level. Gold and Platinum are both genuine, but they describe very different depths of scrutiny.

Wyvern Wingman and Wyvern Registered are not the same thing

Wyvern's core product is the Wingman Standard. A Wyvern Wingman operator has been audited against it; Wyvern's audits and assessments page says the operator audit covers flight operations, the safety management system, training, maintenance and organisational controls. Wingman PRO sits above it: Wyvern awards it when it has also assessed the operator's safety culture and found the safety management system fully effective and in a phase of continual improvement.

The trap is the third label. A Wyvern Registered operator shares safety data with Wyvern so that a passenger can run a report against Wyvern's Registered standard, but, in Wyvern's own words in its explainer on how the system works, registered operators "are not assessed and certified by WYVERN." Registered is a transparency step, not an audit. It is better than nothing; it is not Wingman.

Wyvern also certifies brokers (Wingman Broker), ground handlers (Wingman FBO) and maintenance organisations, and publishes public directories for each. If a company quotes a Wyvern status, the directory is where you confirm it.

How to read a Wyvern PASS report

PASS stands for Pilot and Aircraft Safety Survey, and it is the part of Wyvern's system most useful to a passenger, because it is about your trip rather than the company in general. Wyvern says a PASS report pulls operator, aircraft and pilot information from its database and compares it with a predefined standard, producing an evaluation and a gap analysis. You can ask the operator, or a Wyvern-certified broker, for one.

There are two flavours, and the first thing to read is which one you have:

• A Wingman Standard report checks more than 150 data points, according to Wyvern, including pilot and maintenance training, crew currency, background checks, accident records and whether the operator is in good standing.
• A Registered Standard report covers fewer points, mainly aircraft, pilot and insurance data. Wyvern has said the Registered version shows when an operator has not validated its safety management system.

Then read it in this order. First, check the operator name matches the company named on your contract. Second, check the aircraft registration matches the tail number you were quoted. Third, look at the named pilots: Wyvern says a PASS confirms both pilots are appropriately qualified, trained and experienced on the aircraft, so any flagged gap there is the question to put back to the operator. Fourth, note the insurance section. Anything flagged is not automatically a reason to cancel, but it is a reason to ask, in writing, before you pay.

One limit worth stating plainly: a PASS report is a snapshot built from data held at the time it is run. If the aircraft or crew changes after you receive it, the report no longer describes your flight. Ask for a fresh one if the tail number changes.

Where IS-BAO fits

IS-BAO, the International Standard for Business Aircraft Operations, is a voluntary code of practice run by IBAC and, in IBAC's words, based on the ICAO Standards and Recommended Practices. It does not rate an operator so much as measure how mature its safety management system has become:

• Stage 1: the operator has established and documented its safety management framework.
• Stage 2: the system is fully running and part of routine work, with regular audits and performance reviews.
• Stage 3: the highest level, where safety management is fully integrated into the organisation's culture.

Operators are audited by accredited IS-BAO auditors and, according to IBAC's own guidance, receive a two-year or three-year registration with a certificate they can display. Ask to see it, and check the stage and the dates on it. There is a sister standard, IS-BAH, for ground handlers and private terminals; we cover that in our guide to what an FBO is.

The UK CAA AOC check: the one that is not optional

Everything above is voluntary. The Air Operator Certificate is not. The UK Civil Aviation Authority is explicit that paid flights in a business jet are commercial air transport, and that the operator must have the correct certificate, insurance and licences. It also states that the company selling you the flight may be different from the company operating it, and that by law you must be told the name of the operator.

Checking takes a couple of minutes. The CAA publishes a list of UK aeroplane and helicopter AOC holders as a PDF, showing each company's name, trading names, contact website, aircraft types and AOC number. Search it for the operator named on your quote, then check two things: that the aircraft type you were offered appears against that operator, and that the trading name on your paperwork matches one on the list.

Two caveats. The list covers UK operators only; an aircraft on a French, Swiss or Maltese AOC will not appear, and you would ask that operator for a copy of its certificate and check it with the issuing authority. And the CAA's advice is blunt: never assume a flight is legal and never accept one on trust. If you are told an AOC isn't needed, its leaflet on illegal flights says to ask why not. Our guide to spotting a private jet charter scam covers what to do with the answer.

How to verify a private jet operator in five minutes

This is the routine we would follow for any charter, full price or empty legs alike:

1. Get the operator's legal name in writing. Not the booking company's brand: the company that holds operational control. If you are booking through a broker, the broker should give you this before you pay. Our explainer on charter broker vs operator covers why the two differ.
2. Check the AOC. For a UK operator, find it on the CAA list and confirm the aircraft type. For a non-UK operator, ask for the certificate and its issuing authority.
3. Check the claimed rating at source. ARGUS has an operator registry showing each rated operator's level. Wyvern has public directories for Registered, Wingman and Wingman PRO operators. For IS-BAO, ask for the registration certificate.
4. Ask for the tail number and, if Wyvern-linked, a PASS report. This is the only step that checks the actual aircraft and crew for your date.
5. Read the cancellation and substitution terms. If the aircraft can be swapped, the contract should say the replacement will meet the same standard.

A good operator or broker answers all five without hesitation, and will not find the questions unusual.

Which rating matters most?

Honestly, the presence of one is more telling than which one. ARGUS’s registry search is built around US cities, states and ZIP codes, so a European operator not appearing there is not, on its own, a red flag. Check Wyvern's directories and IS-BAO registration too, and weigh whatever the operator actually holds.

If you are choosing between two otherwise equal quotes, our rough order of reassurance is: an on-site audited status (ARGUS Platinum or above, Wyvern Wingman or above, IS-BAO Stage 2 or 3) ahead of a desk-based one (ARGUS Gold, Wyvern Registered), and any of them ahead of none. Where it isn't worth agonising: once both operators hold a current on-site audited rating, the difference between them is unlikely to matter more than price, aircraft and timing.

What a rating cannot tell you is whether a quote is fair. That's a separate question, covered in our private jet charter cost guide.

What ARGUS vs Wyvern ratings can't tell you

Ratings are useful, and it is worth being equally clear about where they stop. These are the cases where we would not lean on a badge alone:

• When the rating is old news. Every rating is a judgement made at the last audit or review. ARGUS Platinum is renewed on a two-year cycle, and IS-BAO registrations run for two or three years. Between those points, the operator could have changed fleet, management or crew. Check the date on what you are shown, not just the level.
• When the aircraft changes hands. A rating attaches to an operator. If your aircraft is substituted with one flown by a different operator, the original badge no longer describes your flight. Your contract should say the replacement meets the same standard, and you are entitled to its operator name and rating too.
• When the badge belongs to the seller, not the flight. Wyvern certifies brokers as well as operators. A Wingman Broker is a good sign about the company you are booking with, but it says nothing about the operator that company places you with. Ask for both.
• When a rating is used to excuse a missing AOC. No voluntary rating makes an unlicensed flight legal. If the AOC question gets a vague answer, a confident mention of ARGUS or Wyvern should not settle it.
• When you are judging value. A rated operator can still quote a poor price or vague terms. A rating answers "is this operator taking safety seriously?" and nothing else.

Worked example: checking one quote, step by step

Here is how the checks above play out on a realistic booking. Say you are quoted a light jet from London to Nice, one way, for four passengers. On this site's indicative figures, a light jet on that route is roughly £9,000–£14,000 one way for the whole aircraft, including its positioning; the live figure is confirmed on enquiry.

1. The quote. It names the broker you are paying and, as the operator, a company holding an AOC issued outside the UK. Because it is not a UK operator, it will not be on the CAA list. You ask for a copy of its certificate and note the issuing authority, which you can contact if anything looks wrong.
2. The rating claim. The broker says the operator is "ARGUS and Wyvern". You ask which level of each. The answer comes back as ARGUS Platinum and Wyvern Wingman, and you check both in the ARGUS registry and Wyvern's public directory. If one does not appear, you ask why before going further, remembering that ARGUS's search is US-centred.
3. The tail number and PASS report. You ask for the registration and a PASS report. The operator name and tail match your quote, and both pilots show as qualified on type. Had anything been flagged, that would be your written question to the operator.
4. The paperwork. The contract names the operator, the aircraft type and tail, and has a substitution clause promising the same category and standard. The price is itemised, so every add-on is visible before you pay, and the cancellation schedule is clear about what you lose and when.
5. Two days before departure. The operator swaps to a sister aircraft. You ask for a fresh PASS report on the new tail. It takes the broker a few minutes, and your checks now describe the aircraft you will actually fly in.

Total time spent: well under half an hour, spread over a few emails. That is the real cost of checking, and it is small next to the cost of not checking.

Do these ratings apply to empty legs?

Yes, because they rate the operator, not the ticket. An empty leg is flown by the same operator, under the same AOC and the same audited systems as the full-price flight that created it. We go through the regulatory side in are empty legs safe?, and every operator surfaced through the global empty-leg marketplace on this site is ARGUS or Wyvern-rated. You are still entitled to ask which rating, at which level, and to see it confirmed.

Frequently asked questions