FMS 64mm J-10 Airspeed Head RC Part FMSEU120

The FMS 64mm J-10 Airspeed Head, part number FMSEU120, is an RC aircraft component named for the J-10. The supplied manufacturer information also includes guidance on operating model aircraft safely and lawfully in the UK.

The guidance was updated on 1 January 2026 following changes to the rules for drones and model aircraft. Before flying most drones or model aircraft outdoors in the UK, operators may need to complete a theory test and register with the Civil Aviation Authority (CAA). The exact requirements depend on the weight or class of the aircraft.

UK Flying Guidance

For aircraft weighing from 250g to less than 25kg in classes UK1, UK2, UK3 or UK4, both a Flyer ID and an Operator ID are required. For aircraft weighing from 100g to less than 250g, the requirements vary according to whether a camera is fitted.

• A Flyer ID is required for aircraft from 250g to less than 25kg.
• An Operator ID is required for aircraft from 250g to less than 25kg.
• For aircraft from 100g to less than 250g with a camera, both IDs are required.
• For aircraft from 100g to less than 250g without a camera, a Flyer ID is required and an Operator ID is optional.
• For aircraft under 100g, a Flyer ID is recommended and an Operator ID is optional.

The supplied information states that flying without the required IDs is against the law and may result in a fine or, in the most serious cases, imprisonment. Check the latest requirements before flying and consult the UK Civil Aviation Authority website for the full Drone Code and current information on responsible model aircraft operation.