Our Team

The People Behind AACS

At AACS, our strength lies in the experience, integrity, and dedication of our people. Our team brings together industry expertise, technical knowledge, and a commitment to delivering measurable results for our clients.

We believe in collaboration, innovation, and building long-term partnerships based on trust and performance.

Capt, Stephen Crocker

Founder & Director – Aerospace and Aviation Consulting Services (AACS)
United Kingdom & Australia

Stephen Crocker is a senior aviation professional with over 30 years of operational, regulatory and strategic experience in the global aviation sector. He is the Founder and Director of Aerospace and Aviation Consulting Services (AACS), where he leads advisory, regulatory, safety, and operational delivery for aviation authorities, commercial operators, airports, and government agencies.

Stephen has dedicated his career to strengthening aviation safety, compliance, and performance through hands-on operational expertise and regulator-aligned advisory services. His leadership reflects a deep understanding of the aviation landscape, enabling organisations to navigate complex regulatory environments, optimise operations, and implement robust safety systems.

As Director of AACS, Stephen has played a central role in delivering high-impact aviation programmes across civil and commercial domains, including Safety Management Systems (SMS), Air Operator Certificate (AOC) development, regulatory compliance frameworks, and cargo operational solutions. He also leads business development activities for the Asia-Pacific region, bringing strategic insight and industry credibility to multinational initiatives.(LinkedIn)

Stephen holds an Airline Transport Pilot Licence (ATPL) and has extensive experience as a flight operations instructor and examiner, reflecting both professional operational knowledge and training capability. His professional background encompasses airline operations, aircraft acquisition strategy, heavy-lift and cargo network execution, and multi-jurisdictional regulatory engagement — including safety oversight systems and international approvals.(LinkedIn)

A respected voice in the aviation community, Stephen combines technical proficiency with strategic leadership, positioning AACS as a trusted partner for organisations seeking independent, practical, and compliant aviation solutions. He is based in the United Kingdom and works globally to support clients in enhancing safety performance, operational resilience, and regulatory readiness.

📧 email@aacsltd.com
📞 +44. 07930654075

Ian Dix

Director

Ian Dix — Specialist Aviation & Safety Adviser

Professional Profile

Ian Dix is a senior aviation consultant and international subject-matter expert specialising in airspace design, aviation operations, regulatory systems, and aviation safety oversight. With extensive global operational and consultancy experience, he provides strategic advisory services to governments, regulators, airports, airlines, defence organisations, and aviation industry stakeholders.

Operating through Aerospace & Aviation Consulting Services, Ian delivers practical, evidence-based consultancy grounded in real-world aviation operations and regulatory implementation.

His work spans civil, commercial, military, and specialist aviation environments, combining operational expertise with policy, regulatory, and technical system design capabilities.

Airspace & Air Traffic Management

• Airspace architecture design and optimisation
• SID, STAR and instrument procedure development
• Airspace capacity modelling and risk analysis
• Performance-based navigation (PBN) procedures
• Aeronautical data management systems
• Fast-time simulation and airspace modelling

AACS consultants possess advanced experience in designing air routes, instrument approaches, and complex airspace structures to support safe and efficient operations.

Aviation Safety & Accident Investigation

• Aircraft accident and incident investigation
• Independent technical investigation services
• Insurance and operator advisory support
• Operational safety analysis
• Evidence-based reporting and recommendations

The AACS team has conducted 35+ aircraft investigations over more than 20 years, serving operators, insurers, and aviation organisations worldwide.

Regulatory & Government Advisory

• ICAO compliance and oversight programmes
• Aviation regulatory reform and restructuring
• Safety Management Systems (SMS) implementation
• Inspector training and competency frameworks
• Aviation legislation development and review

Consultancy support includes participation in international oversight initiatives and aviation regulatory modernisation projects.

Airport Development & Operations

• Airport masterplanning and operational modelling
• Airspace integration with airport expansion
• Technology and procedural implementation
• Operational cost modelling and business planning

AACS applies simulation-based methodologies to evaluate airport and airspace performance prior to implementation.

Aviation Security & Defence Support

• Airport and infrastructure security systems
• Aviation security technology evaluation
• Support to defence and military aviation operations
• Security risk and capability assessments

Experience includes collaboration on advanced airport security solutions and operational security programmes.

Industry Self-Administration Systems

Ian Dix contributes to the development of aviation self-administration frameworks, enabling industry bodies to undertake delegated regulatory functions under approved governance structures.

These systems integrate:

• Risk-based safety management
• Defined operational accountability
• Regulatory delegation frameworks

AACS consultants are recognised as leading specialists in this niche aviation governance model. (aacsltd.co.uk)

Operational & Strategic Capabilities

Ian’s consultancy combines:

• Strategic aviation planning
• Operational implementation expertise
• Regulatory compliance alignment
• Safety and risk modelling
• International programme delivery
• Cross-sector aviation integration

Projects range from early feasibility and policy development through to operational deployment and post-implementation evaluation.

International Experience

Ian Dix supports projects globally through AACS Ltd’s international consultancy network, with experience across multiple jurisdictions and operational environments.

Engagements include:

• Government aviation authorities
• Commercial aviation operators
• Military aviation programmes
• Airport operators
• Insurance and investigation clients

Margaret Llewellyn OBE

Strategic Transport & Infrastructure Advisor

Margaret Llewellyn OBE strengthens AACS’s advisory capability across rail, airports and seaports by aligning operational performance with governance, investment discipline and long-term infrastructure strategy.

Her executive and non-executive career spans rail governance, maritime operations, economic development and airport board leadership — including service on the boards of Cardiff Airport and Ports of Jersey (operator of Jersey Airport). This provides AACS with direct insight into live airport operating environments alongside rail and port infrastructure oversight.

Strategy & Transformation

Margaret supports transport organisations navigating change, growth or restructuring by:

• Shaping long-term rail, airport and port strategies
• Advising on airport commercial positioning and route development governance
• Aligning infrastructure performance with regional and national economic priorities
• Developing integrated, multi-modal transport strategies
• Supporting regulatory engagement and shareholder alignment

Her airport board experience provides practical understanding of commercial pressures, passenger growth challenges and resilience planning in competitive aviation markets.

Operational Performance & Assurance

With hands-on experience in shipping, terminals and rail governance — alongside airport board oversight — Margaret enhances operational resilience through:

• Independent operational and performance reviews
• Strengthened safety, compliance and risk oversight frameworks
• Improved asset utilisation across airside, landside and intermodal interfaces
• Operational recovery and business continuity planning
• Executive and board-level performance monitoring

She understands the operational realities of runway utilisation, terminal efficiency, ground handling coordination and surface access integration.

Governance & Board Advisory

Margaret brings significant non-executive depth to AACS clients by:

• Providing independent board challenge and assurance
• Strengthening governance structures in regulated infrastructure environments
• Supporting shareholder and government reporting frameworks
• Advising on public-private operating models
• Mentoring senior leadership teams in complex transport organisations

Her airport board roles reinforce her understanding of aviation regulation, aeronautical revenue models and stakeholder accountability.

Investment & Infrastructure Development

Margaret strengthens capital planning and infrastructure oversight through:

• Business case review and investment challenge
• Capital programme governance
• Infrastructure funding strategy development
• Alignment of airport and port expansion with regional economic growth
• Stakeholder coordination across operators, investors and government

Her experience ensures infrastructure investment is commercially viable, operationally deliverable and economically impactful.

Sustainability & Regional Growth

Across rail, airports and ports, Margaret supports:

• Lower-carbon freight and passenger system integration
• Sustainable airport growth strategies
• Regional connectivity improvement
• Inclusive leadership and workforce development
• Infrastructure planning aligned with environmental governance

The AACS Advantage

Through Margaret’s combined rail, maritime and airport board experience — including Cardiff and Jersey — AACS enhances its ability to deliver:

• Independent strategic insight
• Operational credibility
• Aviation, rail and maritime governance expertise
• Infrastructure investment confidence
• Long-term transport system resilience

Margaret brings clarity at board level, credibility in operational environments and confidence in investment decision-making — strengthening AACS’s capability across the full transport infrastructure lifecycle.

Why Our Team Makes the Difference

✔ Industry-certified professionals
✔ Client-focused approach
✔ Proven track record of successful projects
✔ Commitment to safety and compliance
✔ Continuous professional development

Our Commitment

Every member of AACS is committed to delivering:

• Professional excellence
• Transparent communication
• Ethical business practices
• Results-driven solutions

Together, we work to exceed client expectations and build long-term partnerships.