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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 The MPDs in CAP 661 remain valid and are not ‘withdrawn’, unless stated in the alphabetical list below, where the entry will state that it has been cancelled/superseded.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:

Proposed MPDs (PMPDs) are available for review and comment. The closing date for comments is stated at the end of the PMPD. Comments should be sent to the AD Unit.

Distribution of MPDs

MPDs are published on the website under Mandatory permit directives and notified via our safety critical information subscription service.

By registering and choosing a subscription to Safety Critical Information, which includes MPDs, you will receive an email notification when new information is published.