ECM certification & compliance
An Entity in Charge of Maintenance (ECM) is the organisation designated as responsible for maintaining a specific railway vehicle in a safe state for operation, and registered as such in the National Vehicle Register (NVR).
The ECM framework is established by Commission Implementing Regulation (EU) 2019/779, adopted under Directive (EU) 2016/798 on railway safety.
The regulation applies to all railway vehicles operating on public infrastructure — freight wagons, passenger coaches, multiple units, and locomotives — following the extension from the earlier freight-wagon-only scope of Regulation 445/2011, which 2019/779 replaced with effect from June 2020.
Every vehicle must have an ECM registered in its NVR entry before it can enter service. For freight wagons, the ECM must hold a valid certification certificate issued by an accredited body.
For other vehicle categories, compliance with Annex II of the regulation can be demonstrated through ECM certification or, in the case of railway undertakings and infrastructure managers, through the existing safety certification or safety authorisation processes.
The four ECM functions
Regulation 2019/779 defines four maintenance functions that together constitute the ECM system.
The management function provides overall governance: policy, risk management, competence management, and communication with other parties in the railway system including vehicle keepers, operators, and manufacturers.
The maintenance development function translates the vehicle’s technical file and operational data into a maintenance plan, defining which tasks are required, at what intervals, and to what standards.
The fleet maintenance management function coordinates planning, scheduling, and documentation of maintenance work — ensuring that the correct tasks reach the correct vehicles at the correct time, and that records are complete.
The maintenance delivery function covers the actual execution of maintenance tasks, whether performed by the ECM organisation itself or by third-party workshops under contract. Outsourced maintenance delivery functions can be separately certified under the same regulation, giving operators and independent workshops a defined pathway to demonstrate compliance.
Certification and audit
ECM certification is issued for five years following an initial audit conducted by an accredited certification body. Annual surveillance audits verify continued compliance. The scope of the certificate specifies the vehicle categories and maintenance functions covered.
Certification bodies must themselves be accredited under Regulation (EC) 765/2008 and cooperate within the European network of bodies to enable mutual recognition of certificates across member states.
Safety-critical components
A specific requirement introduced by 2019/779 is the management of safety-critical components.
The ECM must maintain a catalogue of safety-critical components derived from the vehicle manufacturer’s technical file and ensure that maintenance instructions for those components are followed and documented.
Observations of abnormal wear or defects in safety-critical components outside normal wear patterns must be reported through the Safety Alert IT System (SAITS) operated by the European Union Agency for Railways.