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.
For some historic and amateur built aircraft, where (for example) an AD can be shown not to affect the aircraft in its current configuration or operation, or where historical continued airworthiness information is not available, the AD can be determined as not applicable by the CAA or an A8-26 approved organisation specifically approved by the CAA to do so. The reason for determining that the AD is not applicable shall be recorded in the aircraft logbook.
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 The MPDs in CAP 661 remain valid and are not ‘withdrawn’, unless stated in the alphabetical list below, where the entry will state that it has been cancelled/superseded.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:
- MPDs issued or revised since 1 January 2011 under the Safety Directive banner (Also contains Proposed MPDs)
- Cancelled / Superseded MPDs issued under the Safety Directive banner
- Alphabetical List of MPDs
Proposed MPDs (PMPDs) are available for review and comment. The closing date for comments, and the email to send them to, is stated at the end of the PMPD.
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.