Request for feedback on the proposed definition of Complex Motor-Powered Aircraft

Closed 23 May 2025

Opened 7 May 2025

Overview

In line with the UK CAA priorities regarding Advanced Air Mobility (AAM), and the CAA has concluded that regulations will need to be amended to enable the safe integration of AAM operations in the UK within the next 2-5 years.

The term Complex Motor-Powered Aircraft (known as CMPA) is used throughout the UK Regulations and controls the appropriate regime that aircraft are placed under.

The use of CMPA is a key factor within the UK Regulations and the definition needs to include AAM aircraft. It is important that the threshold for CMPA is set at an appropriate point such that it enables the use of aircraft in the General Aviation arena without imposing the higher standards associated with CMPA.

The CMPA definition is found in the UK Basic Regulation and uses MTOM, passenger seating, and number of crew, plus engine type for aeroplane, as the criteria for CMPA.

The CAA published in July 2024 its original position on the use of CMPA in its Statement on the Regulation of Continuing Airworthiness of VTOL Aircraft that Require a Pilot on Board (CAP 3004).

The CAA is now proposing an amendment to the CMPA definition and thresholds

The term Complex Motor-Powered Aircraft (known as CMPA) is used throughout the UK Regulations and controls the appropriate regime that aircraft are placed under.

The use of CMPA is a key factor within the UK Regulations and the definition needs to include AAM aircraft. It is important that the threshold for CMPA is set at an appropriate point such that it enables the use of aircraft in the General Aviation arena without imposing the higher standards associated with CMPA.

The CMPA definition is found in the UK Basic Regulation and uses MTOM, passenger seating, and number of crew, plus engine type for aeroplane, as the criteria for CMPA.

The CAA published in July 2024 its original position on the use of CMPA in its Statement on the Regulation of Continuing Airworthiness of VTOL Aircraft that Require a Pilot on Board (CAP 3004).

What happens next

The information provided will be used for the development of our policies and enabling AAM operations in the UK.

Audiences

  • General Aviation
  • Commercial airlines
  • Industry representative bodies

Interests

  • Airworthiness