In March 2020, changes to EASA regulations will separate the existing continuing airworthiness requirements for 'Light Aircraft' from the requirements applicable for licensed air carriers and other complex motor-powered aircraft.
We are developing these webpages over the coming months to help organisations and personnel involved in Light Aircraft to transition to the new requirements. Other regulatory changes (e.g. Part-CAMO, Part-T) are dealt with in other areas of the CAA website.
The regulation will become applicable from 24 March 2020. These webpages will be updated as further guidance becomes available.
complete guide to the transition to the new requirements for organisations is available from EASA.
Part-ML simplifies existing maintenance rules and offers a less prescriptive and burdensome approach to maintenance programmes, airworthiness reviews, defects deferments and TBO extensions. It also provides more privileges for pilots, owners, independent certifying staff and small maintenance organisations. For example:
Part-CAO introduces a new combined Maintenance and Airworthiness Management Organisation for 'Light Aircraft' and aircraft up to 5700 kg MTOW within the revised scope of Part-M:
Part-ML introduces an independent certifying staff authorisation which allows licenced engineers to carry out the airworthiness review and issue the Airworthiness Review Certificate in conjunction with the annual inspection for light aircraft within the scope of Part-ML:
Approved organisations may issue Airworthiness Review Certificates (ARCs) directly using the Word version of Form 15C, suitably amended with their approval number, aircraft details and dating protocols: Download Form 15C Issue 3 (Word Document).
A copy of the ARC issued or extended for an aircraft must be sent to the CAA email@example.com within 10 days, as required by ML.A.903 (h).
EASA Consolidated Regulation (EU) No 1321/2014 on Continuing Airworthiness (applicable from 24 March 2020)
EASA Acceptable Means of Compliance (AMC) and Guidance Material (GM) to Annex Vd (Part-CAO) to Commissio Regulation (EU) No 1321/2014
EASA Acceptable Means of Compliance (AMC) and Guidance Material (GM to Annex Vb (Part-ML) to Commission Regulation (EU) No 1321/2014
Part-ML will become applicable on 24 March 2020. To align UK requirements with this EASA rule change, GR No.17 and GR No.24 will be revised to remove their applicability to aircraft maintained under Part-ML.
After this date, deviations from the Design Approval Holder's Instructions for Continuing Airworthiness (DAH ICA), such as the extension of time between overhaul (TBO) intervals, should be evaluated using a risk-based approach.
The risk-based approach should consider aspects such as the operation of aircraft, type of aircraft, hours/years in service, maintenance of the aircraft, compensating measures, redundancy of components, etc.
Alternative tasks or intervals (e.g. escalations) to the DAH ICA by the CAMO or CAO do not need to be approved by the competent authority. Justification of these deviations are to be documented and retained by the CAMO or CAO.
Where an aircraft subject to Part-ML is not used for commercial operations and the owner elects to manage the continuing airworthiness of the aircraft themselves, the owner issues a declaration for the maintenance programme and in this case, no justification of such deviations is required.
Details can be found in Part-ML Paragraph ML.A.302 and AMC1 ML.A.302(c)(3). Owners, operators and approved organisations should ensure they are familiar with the revised regulations as well as the safety implications of any proposed deviations from the DAH ICA.
It is important to note that deviations with respect to tasks classified as mandatory (e.g. Airworthiness Directives, requirements specified on the type certificate data sheet, airworthiness limitations) are not permitted.
'Light aircraft' means the following non-complex motor-powered aircraft not listed in the air operator certificate of an air carrier licensed in accordance with Regulation (EC) No 1008/2008:
More information will be published as soon as it is available. Please subscribe to our SkyWise alerting system so we can let you know when new information has been added.
Read all @UK_CAA
The UK’s regulatory approach to recreational General Aviation delivers acceptable safety performance – a new independent safety review has concluded
25 February, 2020
Proposals to increase options for training aircraft among latest achievements for the CAA’s General Aviation work
16 January, 2020
CAA launches consultations on proposals to allow initial paid flight training on Permit to Fly aeroplanes and amateur-built microlights
6 January, 2020
Read all News
How safe is recreational flying in the UK
25 February, 2020
Bringing ADS-B surveillance trials to airfields
1 March, 2019
Girls in aviation day
22 October, 2018
Read All Blogs