Mixed fleets: preparing electric aircraft records

If you are considering adding an electric or hybrid aircraft to an existing fleet, prepare records specific to that aircraft and its equipment. The task is to connect new battery data to the maintenance events and due items you already track, without automatically applying another model’s rules.

A hybrid combines electrical energy with energy from fuel. A CAMO is a continuing airworthiness management organisation, responsible for managing the work needed to keep an aircraft safe to fly. A mixed fleet may use several technologies; that alone creates neither two legal regimes nor a single maintenance programme.

The 2026 announcements concern projects, not available routes

On 27 August 2026, Electra announced an agreement with Helsinki and Haaga-Helia to study connections, including Tallinn. The manufacturer describes aircraft designed for very short take-off and landing distances. The agreement envisages a feasibility study completed by the end of 2026; an EL2 demonstration remains subject to later agreements and approvals. This does not announce an available commercial service.

Electra had also announced closure of the EL9’s FAA G-1 document on 10 July. It establishes the certification basis, meaning the rules the design must satisfy. It is not the type certificate. Electra describes the EL9 as a nine-passenger hybrid-electric aircraft developed under Part 23, the US standard for normal-category aeroplanes.

Other programmes in our overview require the same care. Manufacturer sources checked on 12 September 2026:

• Aura Aero ERA: a 19-seat hybrid targeting prototype tests in late 2026 and first flight in 2027. The page shows availability in 2030, but its FAQ announces market launch before 2030. Request a confirmed, dated schedule.
• Vaeridion Microliner: up to nine passengers and service entry targeted in 2030. Its advertised 400 km refers to instrument flight; 550 km requires reduced payload and visual flight conditions. These are not interchangeable range figures.
• Heart ES-30: a 30-seat hybrid targeting certification in 2031. Our electric certification guide distinguishes this programme from the X1 demonstrator.
• Elysian E9X: an all-electric project whose manufacturer announced a further design milestone in 2026. That milestone does not establish operational availability.

These announcements do not determine when an entire fleet will change. Your schedule should remain tied to the actual model selected, its approvals and its delivery conditions.

Start with the rules already applicable

Regulation 2025/111 has adapted the continuing airworthiness framework to electric and hybrid propulsion since 13 February 2026. EASA Decision 2026/002/R provides associated compliance methods and guidance. Presenting all electric maintenance as a field without rules would therefore be incorrect.

The type’s instructions for continued airworthiness, or ICA, specify aircraft-specific tasks and data. Battery limits must come from the applicable documentation. The absence of a universal list of “state of health” fields does not remove an existing requirement for a particular component.

The useful distinction concerns records: which data describe the whole aircraft, and which follow equipment that can move between aircraft? A pack’s part and serial numbers help retain that continuity. The battery management system, or BMS, can supply data, but their meaning and connection to the installed equipment must still be established.

Build a record chain the next team can understand

Ask the manufacturer for a sample records package for the first candidate aircraft. Then check the following with the competent organisation:

1. Configuration: which equipment and software will be installed, and which list defines the reference version?
2. Maintenance: which tasks, limits and measurement methods apply? Which document provides each one?
3. Data: who produces required readings, how can they be exported and how will history be preserved when a pack is replaced?
4. People: who performs maintenance, with which qualifications and authorisations for the type and tasks concerned?
5. Missing answers: who must respond, which evidence is expected and when will the point be reviewed?

This proposed method is not an exhaustive regulatory checklist. It helps formulate precise requests and avoids reliance on a portal without agreed access or export arrangements.

Fictional case: a pack transferred between two aircraft

A team is preparing a future fleet of turboprops and hybrids. In its acceptance exercise, a pack has been transferred from one hybrid to another. The receiving aircraft’s table shows its installation date; the battery export still carries the first aircraft’s identifier.

The records manager retains both documents and requests the transfer report, pack identifiers and data-mapping method. She does not reset its history to the installation date. Once the connection is confirmed, the team can resume tracking under the applicable instructions.

If required information is missing, the point remains open and competent people must assess its consequences. Software that brings records together does not automatically issue an airworthiness review certificate, or ARC.

Prepare the next handover too

At sale or provider change, readable records help the recipient check equipment and its history. They guarantee neither a resale price, insurance nor an airworthiness conclusion. Requested evidence also depends on the transaction and contract.

Start with one aircraft, one document list and an owner for each open question. You can then extend that organisation across the fleet while keeping the relevant differences between types.