ARGUS vs. Wyvern vs. IS-BAO: Only One Is Actually FAA-Recognized

Of the three independent charter safety audits, only IS-BAO is formally recognized by the FAA as a Part 135 audit system; ARGUS and Wyvern are not FAA-affiliated at all. ARGUS Platinum, held by just 5% of operators worldwide, requires 5,000+ hour captains and annual on-site audits. Wyvern Wingman requires a two-day on-site audit, renewed every 24 months, and its PASS report verifies the specific crew flying your trip, not just the operator. IS-BAO certifies in three stages of safety-culture maturity. None is legally required; Hogani Jets vets operators outside all three through its own review process.

ARGUS International, founded in 1995, and Wyvern, founded in 1991, are independent companies that audit private charter operators against their own published standards. IS-BAO, the International Standard for Business Aircraft Operations, is managed by the International Business Aviation Council and built on International Civil Aviation Organization benchmarks, making it the only one of the three formally recognized by the FAA as an audit system for Part 135 operators. None of the three is part of the FAA, and none is legally required to operate a charter. They exist because a Part 135 certificate is a baseline: it confirms an operator meets minimum legal requirements, but says nothing about how that operator compares to others on safety culture, training depth, or audit history. These three programs fill that gap with independent, recurring review.

Tier	What It Actually Requires
ARGUS Registered	The lowest tier. Operator has submitted basic information to ARGUS; not a substitute for a Gold or higher rating.
ARGUS Gold	Operating certificate held at least 1 year, at least one turbine aircraft on the certificate, and a clean safety record verified through document review.
ARGUS Gold Plus	All Gold requirements, plus a completed on-site audit, or active IS-BAO registration, verifying that actual practices match documented procedures.
ARGUS Platinum	The highest standard tier. Requires a full on-site audit, captains with a minimum of 5,000 flight hours and first officers with 2,500, a documented Safety Management System, and a workable Emergency Response Plan.
ARGUS Platinum Elite	All Platinum requirements, plus the operator agrees to continuous monitoring on a 6-month cycle rather than annual review alone.

Only about 5% of charter operators worldwide hold ARGUS Platinum status, and Platinum itself requires annual on-site re-audit to maintain. Between full audits, Platinum-rated operators are also monitored on an ongoing basis through ARGUS's CHEQ database, rather than being reviewed once a year and left unmonitored in between.

Tier	What It Actually Requires
Wyvern Registered	Not a safety audit. The operator maintains fleet, crew, insurance, and regulatory documentation on Wyvern's platform, but Wyvern has not evaluated the operator's actual practices or visited its facility.
Wyvern Wingman	The actual certification, and the Wyvern equivalent of ARGUS Platinum. Requires a two-day, on-site audit, physical attendance only, remote certification is not accepted, covering training records, maintenance procedures, and crew qualifications. Renewed every 24 months.

Wyvern also issues PASS reports, Pilot and Aircraft Safety Survey, a 150-plus point pre-flight check that validates the specific crew and aircraft assigned to a given trip, covering pilot training and currency, accident history, background checks, aircraft maintenance status, and insurance.

Unlike a static annual operator rating, a PASS report reflects real-time conditions for a particular flight, which is why a broker vetting a specific trip should be pulling a PASS report, not just confirming the operator's general Wingman status. As of recent counts, roughly 100 operators worldwide hold Wingman status, with several hundred more Registered but not Wingman-certified.

IS-BAO is unique among the three in being explicitly recognized by the FAA as an audit system for Part 135 operators, and it certifies in three ascending stages rather than a single pass/fail audit.

Stage	What It Actually Shows
Stage 1	The operator has established an appropriate Safety Management System.
Stage 2	The operator demonstrates effective, ongoing management of safety risk; typically takes several years of operation to reach.
Stage 3	The operator's safety culture is mature, ingrained, and continuously evolving, the highest of the three stages.

IS-BAO is primarily an operator-facing standard focused on management systems and internal process rather than a single operator-facing rating like Gold or Wingman, but it is directly relevant to charter clients because it signals the depth of an operator's safety culture beyond a pass/fail audit result. It is also a common starting point for newer operators building a compliant safety program from the ground up.

Attribute	ARGUS	Wyvern	IS-BAO
Top Tier	Platinum (Platinum Elite above it)	Wingman	Stage 3
Audit Type	Full on-site at Platinum	Two-day on-site, physical only	Third-party audit against ICAO benchmarks
Renewal Cycle	Annual, with CHEQ monitoring between audits	Every 24 months	Varies; reassessed as the operator matures
Pilot-Level Detail	Minimum hours required (5,000 captain / 2,500 FO) but no public per-pilot database	PASS report verifies the specific crew for a specific flight	Not pilot-specific; focused on organizational SMS
FAA Recognition	Independent, not FAA-affiliated	Independent, not FAA-affiliated	The only one formally recognized by the FAA as a Part 135 audit system
Approximate Reach	~5% of operators hold Platinum	~100 operators hold Wingman	Varies by stage; fewer reach Stage 3

No. Every Part 135 operator must meet FAA safety requirements regardless of whether it holds an ARGUS, Wyvern, or IS-BAO rating. These third-party programs add an additional, independent layer of verification beyond the FAA baseline, but plenty of well-run, safe operators are not enrolled in any of them, often for reasons unrelated to safety, such as cost or fleet size.

Hogani Jets does not treat any of these ratings as a blanket requirement for every charter; where appropriate, flights are arranged through ARGUS-, Wyvern-, or IS-BAO-rated operators, and Hogani Jets also works with vetted operators outside all three programs, selected through its own safety review process.

Which specific operator, not just which broker, is flying this trip, and what is that operator's Part 135 certificate number?
Does the operator hold an ARGUS, Wyvern, or IS-BAO rating, and if so, which specific tier, not just "ARGUS rated" without specifying Gold versus Platinum, or "IS-BAO certified" without specifying which stage?
If the operator holds none of the three, what independent safety review has been conducted on it?
For Wyvern-rated operators specifically, can the assigned captain's individual PASS report be verified for this specific flight, not just the operator's general Wingman status?
When was the operator's most recent audit completed? A lapsed certification under any of the three programs is a meaningful red flag regardless of the tier once held.

Hogani Jets coordinates each charter through licensed Part 135 operators.

Contact Hogani Jets at charter@hoganijets.com or +1-855-660-0573.

Reviewed by Matt Hogan — Founder, Hogani Jets & Aviation Specialist.

Frequently Asked Questions (FAQ)

ARGUS Platinum is ARGUS's highest standard tier, requiring a full on-site audit, captains with a minimum of 5,000 flight hours, first officers with 2,500, a documented Safety Management System, and a workable Emergency Response Plan. Only about 5% of charter operators worldwide hold Platinum status.

Wyvern Wingman is Wyvern's actual safety certification, requiring a two-day, physical, on-site audit of training records, maintenance procedures, and crew qualifications, renewed every 24 months. Remote or virtual certification is not accepted.

IS-BAO is the International Standard for Business Aircraft Operations, managed by the International Business Aviation Council and the only one of the three formally recognized by the FAA as an audit system for Part 135 operators. It certifies operators in three ascending stages based on the maturity of their internal safety management system, rather than a single pass/fail audit.

Not meaningfully. ARGUS Registered is the lowest tier, indicating basic information submission rather than a completed safety audit. It should not be treated as equivalent to Gold, Gold Plus, or Platinum.

No. Wyvern is explicit that Registered is a data-maintenance listing, not a safety audit. The operator has submitted documentation to Wyvern's platform, but Wyvern has not evaluated the operator's actual practices.

No. These are independent, voluntary ratings beyond the FAA's baseline Part 135 requirements. Hogani Jets does not require an ARGUS, Wyvern, or IS-BAO rating on every trip; many safe, well-run operators fall outside all three and are vetted through Hogani Jets' own safety review process instead.

A PASS report, Pilot and Aircraft Safety Survey, is a 150-plus point pre-flight check that validates the specific crew and aircraft assigned to a given trip, covering pilot training and currency, accident history, background checks, and maintenance status. It reflects real-time conditions for that specific flight rather than the operator's general annual rating.

ARGUS Platinum requires annual on-site re-audit, with continuous CHEQ monitoring in between. Wyvern Wingman is renewed every 24 months via another two-day on-site audit. IS-BAO stages are reassessed as the operator's safety program matures rather than on a fixed calendar.

Yes. Since the three organizations evaluate operators somewhat differently, some operators maintain ARGUS Platinum, Wyvern Wingman, and IS-BAO Stage 3 status simultaneously to demonstrate safety credentials across all three frameworks.

No. All three are independent organizations that audit charter operators against their own published standards. None is part of the FAA, though IS-BAO is the only one formally recognized by the FAA as a Part 135 audit system, and none replaces the FAA's own oversight.

Not exclusively. Where appropriate, Hogani Jets arranges flights through ARGUS-, Wyvern-, or IS-BAO-rated operators, and also works with vetted Part 135 operators outside all three programs, selected through Hogani Jets' own safety review process.

Last Updated: 14 Sep 2026, 11:38 AM

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