REGULATORY COMPLIANCE · By ASG
What is EASA Part-IS?
EASA Part-IS is the regulatory framework that requires aviation organisations and competent authorities in scope to manage information security risks with a potential impact on aviation safety. In practical terms, it introduces a formal Information Security Management System that must be defined, implemented, monitored, and continuously improved. This means organisations must move beyond ad hoc cybersecurity controls and build a regulator-ready structure covering governance, roles and responsibilities, risk assessment, occurrence reporting, incident response, recovery, contracted activities, change management, and oversight evidence.
Unlike a purely IT-driven cyber programme, EASA Part-IS expects organisations to connect information security governance with operational risk, safety assurance, reporting processes, contracted services, and management oversight. This is why many organisations need a cross-functional implementation approach involving safety, compliance monitoring, quality, engineering, IT, security, operations, and senior management.
Who Must Comply with EASA Part-IS?
EASA Part-IS affects a broad range of aviation organisations. Depending on approval type and regulatory context, the scope may include maintenance organisations (Part-145, Part-M, Part-CAMO), operators, training organisations (Part-147), aerodrome operators, ATM/ANS organisations, and other approved entities whose information systems and data can influence aviation safety.
That is why organisations already working on EASA TCO compliance, EASA Part-145 compliance, or SMS implementation should not treat information security as a separate side topic. In many cases, EASA Part-IS implementation overlaps with management system design, reporting pathways, organisational accountability, supplier oversight, and regulator-facing evidence preparation — creating opportunities to integrate efforts and reduce duplication.
An effective EASA Part-IS programme is not just about preventing cyber incidents. It is about protecting operational continuity, preserving data integrity, safeguarding critical systems, and ensuring that information security risks do not degrade aviation safety performance. Many organisations already have cybersecurity controls, ISO/IEC 27001 elements, or enterprise IT governance in place — but EASA Part-IS still requires aviation-specific alignment, connecting existing controls to the regulatory evidence and oversight expectations of EASA and competent authorities.
What Does EASA Part-IS Require in Practice?
In practical terms, EASA Part-IS compliance requires more than a policy statement. Organisations must demonstrate a functioning Information Security Management System supported by documented processes and real implementation evidence. Key requirements include: a defined governance structure with clear responsibilities and accountable oversight; an information security policy and implementation framework; risk identification, assessment, and treatment processes; incident detection, reporting, response, and recovery arrangements; management of contracted activities and external service risks; and internal monitoring, assurance, corrective action, and continuous improvement processes.
How to Build an EASA Part-IS Compliance Roadmap:
For most organisations, the most efficient approach is staged: (1) Determine scope and organisational interfaces; (2) Perform a gap analysis against Part-IS requirements, existing controls, and governance arrangements; (3) Map evidence and responsibilities; (4) Develop implementation documents including governance logic, procedures, reporting flows, and response arrangements; (5) Integrate with existing management systems such as compliance monitoring, SMS, and QMS; (6) Test, review, and improve through internal assessment and regulator-ready evidence preparation.
EASA Part-IS and Existing Information Security Frameworks:
Many aviation organisations already have cybersecurity controls, ISO/IEC 27001 elements, enterprise IT governance, or corporate security programmes in place. That can be a strong starting point, but EASA Part-IS still requires aviation-specific alignment. The regulatory expectation is not just technical protection — it is the management of information security risks with a potential impact on aviation safety. Existing control libraries may address access management, asset control, backups, logging, response, and supplier oversight; however, organisations must determine whether those controls are governed, documented, and evidenced in a way that aligns with EASA Part-IS requirements and the operational realities of aviation approvals.
Integration with EASA TCO, Part-145, and SMS:
Where approvals such as EASA TCO or EASA Part-145 are already in place, organisations can often accelerate Part-IS implementation by aligning information security oversight with existing regulatory governance and assurance mechanisms. The compliance monitoring system, management review processes, and SMS reporting pathways already in place under Part-145 can provide the structural foundation for Part-IS integration — significantly reducing the effort and duplication required compared to building a standalone information security management system from scratch.
Benefits of EASA Part-IS Compliance
Why Choose Aero Support Group for EASA Part-IS?
Aero Support Group combines deep expertise in EASA regulatory compliance with practical knowledge of management system design and aviation safety management to deliver Part-IS consulting that is both technically rigorous and operationally practical. Our consulting team understands the intersection of information security governance and aviation safety management — enabling us to design Part-IS frameworks that integrate seamlessly with existing compliance monitoring, SMS, and quality management systems. We support organisations across all relevant approval types, from airlines and MROs to training organisations and aerodrome operators, delivering implementation-ready solutions that meet regulator evidence expectations.
EASA Part-IS is the European aviation regulatory framework for managing information security risks that can affect aviation safety. It applies to a broad range of approved aviation organisations including airlines, MROs (Part-145), continuing airworthiness organisations (Part-CAMO), training organisations (Part-147), aerodrome operators, ATM/ANS organisations, and other approved entities. Organisations should review the EASA Easy Access Rules for Part-IS and the EASA Part-IS FAQs to determine their specific scope and compliance obligations.
EASA Part-IS is specifically designed for aviation organisations and focuses on information security risks with a potential impact on aviation safety — not just general IT security. While ISO/IEC 27001 and other cybersecurity frameworks provide useful technical controls, EASA Part-IS adds aviation-specific requirements around governance accountability, safety assurance integration, regulatory reporting, and the management of contracted activities in an aviation regulatory context. Organisations with existing frameworks need to assess whether their controls are governed and evidenced in a way that meets EASA Part-IS and competent authority expectations.
EASA Part-IS requires a structured Information Security Management System covering: defined governance structure and accountable management; information security policy and implementation framework; risk identification, assessment, and treatment processes; incident detection, reporting, response, and recovery; management of contracted activities and external service risks; and internal monitoring, assurance, corrective action, and continuous improvement. All of these elements must be demonstrated through implementation evidence — not just documented in policy.
Yes. Integration is strongly encouraged and practically beneficial. Organisations with existing Part-145 compliance monitoring systems, SMS frameworks, and quality management processes can align Part-IS governance, reporting pathways, and assurance processes with these existing structures — significantly reducing duplication of effort. Where EASA TCO or Part-145 approvals are already in place, the existing regulatory governance infrastructure provides a strong foundation for Part-IS implementation. Aero Support Group specifically designs integrated compliance approaches that leverage existing management system structures.
Implementation timelines vary depending on the organisation’s size, approval scope, and the maturity of existing cybersecurity and management system infrastructure. Organisations with well-developed compliance monitoring systems and existing IT security controls can typically complete implementation in 3–6 months. Organisations starting from a lower maturity baseline may require 6–12 months. A structured gap assessment at the outset is the most efficient way to define the implementation scope, prioritise activities, and establish a realistic timeline aligned with regulatory deadlines.
- Regulatory compliance with EASA Part-IS and competent authority expectations
- Protected operational continuity and aviation safety performance from information security risks
- Integrated ISMS aligned with existing SMS, compliance monitoring, and quality systems
- Reduced duplication by leveraging existing Part-145, EASA TCO, and SMS governance structures
- Regulator-ready evidence framework demonstrating a functioning, auditable information security system
- Cross-functional implementation support across safety, IT, operations, and management teams
Preparing for EASA Part-IS Compliance?
Aero Support Group supports airlines, MROs, airports, and aviation organisations worldwide with EASA Part-IS gap analysis, governance review, implementation planning, management system integration, and regulator-ready documentation. Contact us to discuss your Part-IS compliance programme.
References
- EASA Easy Access Rules for Information Security (Part-IS) — Official regulatory text and AMC/GM
- EASA Information Security Overview — Part-IS scope and implementation guidance
- EASA Part-IS FAQs — Official answers to common compliance questions
- ICAO Annex 17 — Security: Standards for safeguarding aviation against unlawful interference
- ISO/IEC 27001 — Information Security Management Systems international standard
Subscribe to Global Aviation Safety Radar
Weekly aviation safety and compliance intelligence covering ICAO, IATA, EASA, and UK CAA developments — translated into practical implications for airlines, MROs, airports, ground handlers, and aviation leaders.