Autel EVO Max 4T UK Rules — Enterprise Drone Guide

EVO Max 4T — Key Specifications for UK Pilots

The Autel EVO Max 4T is built for professional and enterprise applications. Its quad-sensor payload — thermal imaging, zoom, wide-angle, and laser rangefinder — makes it a tool for inspection, search and rescue, security, and industrial surveying. At 1,670g, it is the heaviest drone in Autel's consumer-accessible range.

Registration Requirements

Like all drones above 250g in the UK, the EVO Max 4T requires both forms of CAA registration.

Flyer ID

The Flyer ID is free. Pass a 20-question online theory test at the CAA registration portal with at least 16 correct answers. The test covers airspace, weather, privacy, and emergency procedures. Valid for five years.

Operator ID

The Operator ID costs £10.33 per year. The alphanumeric code must be physically displayed on the drone. For enterprise operations, the organisation typically holds the Operator ID, and individual pilots each hold their own Flyer ID.

A3 Rules — Operating Constraints for the EVO Max 4T

Without a UKCA class marking, the EVO Max 4T is restricted to the A3 subcategory of the Open Category. The rules are identical to those for the lighter EVO II Pro and EVO Lite+, but the Max 4T's weight makes some of these constraints more consequential.

• 150-metre buffer: You must maintain at least 150 metres horizontal distance from residential, commercial, industrial and recreational areas.
• No uninvolved people overhead: Do not fly directly above anyone who is not part of your operation.
• 120-metre altitude ceiling: Maximum 120 metres (400 feet) above the surface, unless airspace permissions state otherwise.
• Visual line of sight: Maintain direct visual contact with the drone at all times. The EVO Max 4T's larger size can help with visibility at distance compared to smaller drones.
• Flight Restriction Zones: Airport FRZs, military zones, and other restricted areas require CAA authorisation before entry.

Enterprise Use — When Open Category Is Not Enough

Many professional applications of the EVO Max 4T involve flying near buildings, infrastructure, or people. Roof inspections, building surveys, solar panel assessments, and search and rescue operations frequently require flight within 150 metres of structures — which the A3 subcategory does not allow.

If your enterprise operations cannot comply with A3 distance rules, you will need to apply for an Operational Authorisation (OA) under the CAA's Specific Category. An OA requires:

1. An operational risk assessment: Typically using the SORA (Specific Operations Risk Assessment) methodology, or a pre-defined risk assessment (PDRA) published by the CAA.
2. A GVC (General VLOS Certificate) or equivalent qualification: At least one pilot in the operation must hold a recognised certificate of competence.
3. An Operations Manual: Documenting procedures, safety measures, and emergency protocols for the specific type of work.
4. Insurance: Third-party liability insurance is mandatory for Specific Category operations.

The OA application process takes several weeks to several months. Plan well ahead of any commercial deployments that require closer proximity to people or buildings.

Thermal Imaging — Legal Considerations

The EVO Max 4T's thermal camera introduces additional legal considerations beyond standard drone rules. Thermal imaging can reveal heat patterns through walls and roofs, potentially capturing information about building occupants and their activities.

Under the UK GDPR and the Data Protection Act 2018, thermal data that could identify individuals or reveal information about their behaviour constitutes personal data. Professional operators using thermal imaging should:

• Conduct a Data Protection Impact Assessment (DPIA) before starting thermal survey operations.
• Define a clear lawful basis for processing thermal data (legitimate interest is most common for professional surveys).
• Minimise data collection — capture only what is needed for the specific task.
• Store thermal data securely and delete it when no longer required.
• Inform affected parties where practicable — for building inspections, notify the building owner or occupier.

Insurance for Enterprise Operations

At 1,670g, the EVO Max 4T represents a significant liability risk in the event of a crash or loss of control. Commercial drone insurance is not optional for enterprise users — it is a legal requirement for any paid or professional operation.

Enterprise-grade policies typically provide:

• Third-party liability cover of £1 million to £5 million.
• Hull cover for the drone itself (particularly relevant given the Max 4T's price point).
• Payload cover for the multi-sensor camera system.
• Professional indemnity for survey and inspection work.

Annual premiums for enterprise drone insurance vary widely based on the type of work, but expect to pay between £300 and £800 per year for comprehensive cover of a single EVO Max 4T.

Pre-Flight Protocol for Enterprise Deployments

1. Confirm registrations: Verify all pilots hold current Flyer IDs. Confirm the organisation's Operator ID is displayed on the drone.
2. Check OA status: If the operation falls outside Open Category A3 rules, confirm your Operational Authorisation covers this specific type of work at this location.
3. Airspace clearance: Check NOTAMs, FRZs, and temporary restrictions. For operations near airports or controlled airspace, contact the relevant air traffic control unit.
4. Site risk assessment: Document hazards, identify emergency landing zones, and brief all team members.
5. Equipment check: Verify all four sensors (thermal, zoom, wide, laser) are functioning. Check battery levels, propeller condition, and obstacle avoidance sensors.
6. Weather assessment: Wind, rain, and temperature all affect thermal sensor accuracy and flight stability. The Max 4T handles wind better than lighter drones, but conditions above 30 mph are generally unsuitable.