New transport accident investigation authority: what changes for operators in 2026

Key data

Rail, maritime and civil aviation operators in Spain will soon have a single independent body to which they must report on technical investigation of accidents and incidents. The Order TMD/304/2026 publishes the report of the advisory commission tasked with determining the headquarters of this new authority, marking a key milestone in the process of its formal establishment.

Until now, the functions of technical investigation of accidents in these three transport modes were dispersed across different organizations. The new authority will concentrate them under a single independent entity, as required by European regulations applicable to the transport sector.

What does this regulation establish?

Order TMD/304/2026 has a specific and limited purpose: to publish the report prepared by the advisory commission created to determine the headquarters of the new Independent Administrative Authority for the Technical Investigation of Rail, Maritime and Civil Aviation Accidents and Incidents.

The choice of headquarters is a procedural step that is prior and essential for the organization to be formally established. Without this step, the creation of the entity cannot proceed.

The key elements established by this regulation are:

• Publication of the advisory commission's report on the headquarters of the new organization.
• Confirmation of progress in the process of creating the independent transport accident investigation authority.
• Framework of reference: the creation of this organization responds to requirements of European regulations, which require that the investigation of accidents in rail, maritime and civil aviation transport modes be carried out by an independent entity.
• Centralization of functions currently dispersed across different organizations under a single entity.

It is important to emphasize that this order does not formally establish the organization nor does it yet define its structure, detailed competencies or procedures. Those elements will come in subsequent regulations. What it does is unblock the next step of the process.

Economic and operational impact

The immediate impact of this order is limited: it is an internal administrative procedure. However, the process it triggers has real operational consequences for the affected sectors.

The centralization of technical supervision in a single independent entity implies changes in several areas:

• Single point of contact: Rail, maritime and civil aviation operators will no longer interact with separate organizations for accident and incident investigations. There will be a single organization with which to coordinate.
• Investigation procedures: Unification may imply the standardization of protocols, timelines and information requirements that currently vary by transport mode.
• Operator responsibilities: The establishment of an independent authority with greater institutional visibility may intensify scrutiny of operators in case of accident or incident.
• Internal adaptation: Companies with activity in more than one transport mode (groups with rail, maritime and air divisions) could simplify their compliance management by having a single reference organization.

No direct cost data for operators derived from this specific regulation has been published. The actual economic impact will be determined when the organization's operating regulations are approved.

Who does it affect?

• Rail operators: Companies with a license for passenger or freight rail transport in Spain.
• Maritime operators: Shipping companies, shipowners and maritime transport companies operating in waters under Spanish jurisdiction.
• Civil aviation operators: Airlines, aircraft operators and aeronautical service companies subject to Spanish regulations.
• Transport administrations: Public bodies with competencies in the management or supervision of transport infrastructure.
• Multi-sector business groups: Companies with activity in more than one of the three affected transport modes.

Practical example

A Spanish airline operating regular flights experiences a serious technical incident in one of its aircraft. Currently, the technical investigation of that incident would be carried out by the specific civil aviation organization competent in Spain.

With the new Independent Administrative Authority fully established, that same incident will be investigated by the new unified entity, which will also be responsible for investigating rail and maritime accidents. The airline will have to cooperate with this new organization, adapt to its investigation protocols and meet the information requirements it establishes, which may differ from current ones.

The same scenario applies to a shipping company that suffers an accident in Spanish waters or a rail operator involved in an incident on the network. All of them will have a single point of contact instead of separate organizations by transport mode.

What should companies do now?

1. Identify if you are an affected operator: Check if your company operates in the rail, maritime or civil aviation sector in Spain. If so, this process affects you directly.
2. Monitor the BOE for establishment regulations: This order is only the beginning. The regulations that will define the actual operation of the organization, its competencies and investigation procedures will be published in later phases. Maintain active monitoring.
3. Review internal accident and incident management protocols: Anticipate that investigation procedures may change when the organization becomes operational. Review your current protocols to identify what will need to be adapted.
4. Consult with your legal department or external advisor: If your company has activity in more than one transport mode, analyze how centralization in a single organization can simplify or modify your regulatory compliance management.
5. Stay alert to applicable European regulations: The creation of this organization responds to European requirements. Reviewing the community regulations applicable to your transport mode will give you context on what standards of independence and investigation are expected.