OXYLIOR is an aviation consulting and training firm helping airlines, ATO operators, and airport stakeholders transform how they run their operations.
Founded by Stéphane Cellarius — 24 years at Air France across ramp operations, the Operations Control Center, and the leadership of Ground Operations Engineering for the entire fleet — OXYLIOR brings major carrier expertise to organizations of all sizes.
What we do:
✈️ Airline Operations Transformation
OCC/CCO design, diagnosis & restructuring · Dispatch performance optimization · IRROPS management · Flight and ground procedures overhaul · Operational resilience building
✈️ Airline Launch & AOC Certification
New carrier structuring · Operations Manual drafting (MANEX/OM) · OCC implementation · EASA / DGAC authority approval process · Part-NCC compliance
✈️ Audit Readiness & Operational Excellence
IOSA preparation · EASA regulatory alignment · Direct authority interface (DGAC, EASA, IATA, ICAO) · Internal audits · SMS implementation
✈️ Professional Training
Aircraft dispatcher training · Ground operations & dangerous goods (IATA DGR) · Aeronautical English · Management & leadership for ops teams
Our approach: We don't deliver templates. Every engagement starts with a deep operational diagnosis — because real transformation comes from understanding the specific complexity of your organization, not applying a generic framework.
Certifications: IATA IOSA Auditor · EASA CMM & Safety Manager · FAA Aircraft Dispatcher · Airbus Weight & Balance Engineer
📩 Based in France. Operating across Europe and internationally.
Consulting · Training · Audit Preparation · AOC Support

Oxylior

Stéphane Cellarius

This department provides strategic direction and oversight for the organization.

Oxylior

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Executive Leadership

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