• Mandatory Permit Directives summarise actions that are required to be complied with by UK Owners and Operators of Permit to Fly aircraft.

    UK Owners and Operators of Permit to Fly aircraft of a type that was previously issued with a Certificate of Airworthiness are also required to comply with Airworthiness Directives for airframe, engines, propellers and equipment from CAP476, CAP747 and the latest foreign Airworthiness Directives from the State of Design and EASA in accordance with MPD 1995-001 R5.

    CAP 661 - Mandatory Permit Directives contains all issued MPDs up until 31 January 2012, when the publication ceased to be amended. The MPDs in CAP 661 remain valid and are not ‘withdrawn’, unless stated in the alphabetical list below, where the entry will state that it has been cancelled/superseded.

    Status reports:

    Distribution of MPDs

    MPDs are published on the website under Safety Critical Information and distributed via the CAA Publication Notification Service.

    If you require to be notified of MPDs you will need to register for our free publications subscription service and choose the safety critical information category. Once you have subscribed you will be notified every time a new MPD is published on the CAA website.