List of Mandatory Permit Directives

CAP 661 - Mandatory Permit Directives contains all issued MPDs up until 31 January 2012, when the publication ceased to be amended. MPDs issued under the Safety Directive banner are listed below. See our MPD page for more information.

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

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Individual Publications
Reference Title Status as at Date
MPD 1997-001 R3 Rotorway Executive 90 helicopters: Mandatory Requirements for UK Approval Current 28 April 2014
MPD 1997-003 R2 Rotorway Executive and Rotorway Executive (Modified) helicopters: Mandatory Requirements for UK Approval Current 28 April 2014
MPD 2002-009 R3 Yakovlev Yak-50: Airframe Life Limitation Current 18 March 2014
MPD 2003-010 R1 Rotorway Executive 162F helicopters: Mandatory Requirements for UK Approval Current 28 April 2014
MPD 2011-001-E Magni M24C gyroplanes: Flight Controls - Rudder Pedal Mounting Block – Replacement Current 4 March 2011
MPD 2011-002-E Dyn'Aero MCR-01, MCR-01 Club and MCR-01 ULC: Aluminium Fittings - Inspection Current 19 April 2011
MPD 2011-003-E Rotax 912 and 914 engines: Replacement of Flywheel Hub Washer Part No. 944072 Current 10 May 2011
MPD 2011-004-E (Emergency) Thruster T600: Propeller flange to crankshaft attachment screw replacement Current 20 May 2011
MPD 2011-006-E Rotorsport UK MT-03, MTOSport and Calidus gyroplanes: Rotor Blade – Life Limit: Supersedes MPD 2010-008 R1 Current 12 July 2011
MPD 2011-007 Rotorsport UK MT-03, MTOSport and Calidus gyroplanes: Rotor Head Assembly Main Bearing Bolt – Replacement Current 25 November 2011
MPD 2011-009-E R1 (Emergency) Rotax 912 and 914 Series engines: Crankshaft Inspection Current 18 January 2012
MPD 2011-010 Nanchang CJ-6A: Tailplane Forward Spar - Inspection Current 16 December 2011
MPD 2012-001-E (Emergency) Rotax 912 and 914 Series engines: Engine - Oil pump and attachment bolts -Inspection Current 20 February 2012
MPD 2012-002-E (Emergency) Rotax 912UL and 912ULS Series engines: Fuel Pump - Pressure side fuel hose replacement Current 6 June 2012
MPD 2012-003 CT2K and CTSW Aircraft : Fuel System - Engine Fuel Feed Current 4 October 2012
MPD 2012-004-E Yeoman Light Aircraft Company Limited : Dynamic WT9-UK : Fuel Cock Lever Inspection / Repair Current 24 October 2012
MPD 2012-005-E P&M Aviation Ltd : Pegasus Quik, Quik GT 450, QuikR and Quik GTR : Sail Reinforcement Degradation - Additional Test Current 21 November 2012
MPD 2013-002-E North American Aviation : Inspection of Flight Control System Current 30 April 2013
MPD 2013-003-E Correction (Emergency) Rotax 912UL, 912ULS and 914UL series engines: Cylinder Head Inspection/Replacement Current 30 July 2013
MPD 2013-004 Harvard All Variants: Wing Spar Corrosion Inspection Current 9 September 2013
MPD 2013-005-E: Martin Baker Ejection Seats: Inspection of Ejection Seat Drogue Shackle Connection: Supersedes 2011-008-E Current 26 November 2013
MPD 2014-001-E SkyRanger, SkyRanger Swift and SkyRanger Nynja: Inspection for Material Type – Control Cable Shackles and Elevator Joiner Current 17 January 2014
MPD 2014-002 Aerotechnik EV-97, EV-97A, EV-97 Eurostar SL and EV-97 teamEurostar UK: Wing / Fuselage Fairings – Inspection for Rivet Damage Current 30 January 2014
MPD 2014-003: Supersedes MPDs 1997-005&1997-006 Rotorway Executive helicopters: Engine Cam Gear Life/Replacement Current 28 April 2014
MPD 2015-001 Aerotechnik EV-97, 97A Eurostar, EV-97 Eurostar SL, EV-97 teamEurostar UK and EV-97 Eurostar SL Microlight: Wing Flaps –Correct Engagement of the Actuator Pins - Inspection Current 23 June 2015
MPD 2015-002 Kidde Graviner Automatic Fire Extinguishers: Inspection of Frangible Plug on Automatic Fire Extinguisher Current 13 October 2015
MPD 2016-001 R1 Rolls-Royce Avon, Viper, Orpheus,Nene, Derwent, DH Goblin, Ghost,Motorlet M701,Ivchenko AI-25: Engine Fuel System- Ageing Effects Current 20 February 2017
MPD 2016-003-E P&M Aviation Ltd Pegasus Quik: Wing - Top Rigging Clevis Pin – Split Ring Replacement Current 22 June 2016
MPD 2016-004-E Ikarus C42: Fuselage – Main Fuselage Tube – Inspection for Cracking Current 28 June 2016
MPD 2016-005-E Westland Gazelle AH.Mk 1, HT.Mk 2 and HT.Mk 3 helicopters: Landing Gear – Rear Cross-Tube – Inspection / Replacement Current 15 July 2016
MPD 2016-006-E Ikarus C42: Propeller – Forward Hub – Inspection for Cracking Current 15 July 2016
MPD 2016-007-E Aerotechnik EV-97 Eurostar: Fuselage – Rear Fuselage Bulkhead – Inspection for Cracking Current 15 July 2016
MPD 2016-008-E P&M Aviation Ltd: Wing – Luff Line Attachment Webbing – Inspection Current 3 October 2016
MPD 2016-009 P&M Aviation Quik GTR, QuikR: Wing – Hang Bolt Installation– Inspection and Modification Current 22 November 2016
MPD 2016-010 Westland Gazelle AH.Mk 1, HT.Mk 2 and HT.Mk 3 helicopters: Main Rotor – Main Rotor Hub Torsion Bars – Inspection Current 5 October 2016
MPD 2016-011-E All Microlights where P&M Aviation Ltd is the Type Approval Holder: Clevis Pin / Split Ring Installations – Inspection / Replacement Current 23 November 2016
MPD 2017-001 Rotax 912UL, 912ULS, 914UL: Engine Cylinder Head – Inspection/Replacement, Engine Re-identification Current 8 February 2017
MPD 2017-002-E Westland Scout AH1, Westland Wasp HAS1 and Westland Wasp MK1B: Rotors Flight Control - Main Rotor Gearbox Controls - Inspection and Lubrication of Trunnion Bearings between Overhauls Current 20 February 2017
MPD 2017-003-E All Microlights where P&M Aviation Ltd are the Type Approval Holder: Hang Bolt plus Lanyard - Inspection / Replacement Current 21 February 2017
MPD 2017-004-E All Microlights where P&M Aviation Ltd are the Type Approval Holder: Rigging Cables with Roll Swaged End Terminals – Inspection / Replacement Current 15 May 2017
MPD 2017-005-E Rotax 912 iS and 912 iS Sport engines Ignition: Ignition Housing Sealing Plugs - Inspection Current 9 August 2017
MPD 2018-001 Rotax 912 and 914 Engines: Reciprocating Engine – Valve Push Rod Assembly – Inspection / Replacement Current 15 February 2018
MPD 2018-002 [Correction] Rolls Royce Avon Mk 1, Avon Mk 100 series, Avon Mk 200 series: Engine Calendar Life Limits- CORRECTION
Review Comment: This MPD supersedes MPD 2001-001 dated 18 May 2001 		Current 26 March 2018
MPD 2018-003R1 [Correction] Ex-military aircraft equipped with Aircraft Assisted Escape Systems: Pyrotechnic Component Life Limitations – Remove from Service Current 8 February 2023
MPD 2018-004 Rolls-Royce Avon Mk 1 and 100 Series Engines: Engine Stage 1 - 4 Compressor Blades and Discs - Inspection
Review Comment: This MPD supersedes MPD 2016-002 dated 7 October 2016 		Current 24 May 2018
MPD 2018-005-E Rolls-Royce Avon Mk 20 and 100 series Engines, All serial numbers, All applicable Front Compressor Casing Part Numbers: Front Compressor Casing- Inspection Current 7 June 2018
MPD 2018-006 EV-97 teamEurostar UK and EV-97 Eurostar SL Microlight: Amendment of Inspection Requirements and Replacement of Critical Structural Items Current 8 June 2018
MPD 2018-007 Bristol Aeroplane Company: Engine Exhaust Valves-Removal From Service Current 3 August 2018
MPD 2018-008 Vedenyev M-14P, Ivchenko AI-14, Zhuzhou HS-6: Engine Fuel System- Inspection and Draining Current 14 September 2018
MPD 2018-009-E Rotorsport UK Calidus: Front Fork Top Steering Plate Replacement Current 17 October 2018
MPD 2019-001-E Rotax 915 iS A and Rotax 914 UL engines, all serial numbers: Exchange of exhaust valves Current 11 January 2019
MPD 2019-002 lvchenko AI-14, Vedeneyev M-14 P and Zhuzhou HS-6 engines: Engine Life Limit
Review Comment: This MPD supersedes MPD 1998-001R2 dated 31 January 2002 		Current 25 January 2019
MPD 2019-003 Various: Amendment of National Permit to Fly Conditions – Requirement for Aircraft to be Maintained in Accordance with a Maintenance Programme Approved by the UK CAA Current 25 February 2019
MPD 2019-005 All aircraft operating on a UK Permit to Fly fitted with a Ballistic Parachute Recovery System (BPRS) : Placarding Requirements for Aircraft fitted with a Ballistic Parachute Recovery System (BPRS) Current 10 April 2019
MPD 2019-006-E (Emergency) Rotax 912 i and 915 i A (Series) engines: Engine fuel and Control - Fuel Pump Assembly - Replacement
Review Comment: This MPD Supersedes Emergency MPD 2019-004-E 		Current 17 October 2019
MPD 2020-001 Ex-Military Westland Gazelle Helicopters: Tail Rotor Blades – Life Limit / Re-identification Current 23 January 2020
MPD 2020-002 R1 Merlin Engine, Packard Merlin Engine: Camshaft Bracket, Retaining Studs Current 21 May 2020
MPD 2020-003 Rolls-Royce Derwent Engines: Engine Calendar Life Limits Current 21 July 2020
MPD 2020-004 [Correction] Vickers Supermarine Spitfire and Seafire aeroplanes: Cracking of Main Landing Gear Chassis Pintles - CORRECTION
Review Comment: This MPD supersedes MPD 1995-089 R1 dated 18 January 2001 		Current 19 October 2020
MPD 2020-005 Vickers Supermarine Spitfire and Seafire aeroplanes: Main Landing Gear Support Eye bolts
Review Comment: This MPD supersedes MPD 1999-007 dated 9 April 1999 		Current 28 September 2020
MPD 2020-006 Vickers Supermarine Spitfire and Seafire aeroplanes: Main Landing Gear Pintle Mount Studs Inspection
Review Comment: This MPD supersedes MPD 1999-009 dated 8 July 1999 		Current 28 September 2020
MPD 2021-001 Bell Textron IncHH-1K, TH-1F, TH-1L, UHSeries helicopters : Rotors – Inspection and Replacement of Main Rotor Hub Strap Pins Current 21 September 2021
MPD 2022-001R1 Edge 360, Edge 540 and Laser Z200: Flight Controls – Aileron Centre Hinge Attachment – Inspection / Replacement Current 30 January 2023
MPD 2022-002 MT-03, MTOsport, MTOsport 2017, Calidus and Cavalon gyroplanes: Main Rotor(s) – Rotor Blade – Inspection / Replacement / Life-Limitation Amendment Current 24 January 2022
MPD 2022-003 [Correction] Europa Aircraft: Aircraft Doors - Bracket - Modification Current 22 June 2022
MPD 2022-004-E Reality Escapades and Sherwood Scouts: Cockpit Seats – Seat Locking and Secondary Seat Restraint – Inspection Current 10 February 2022
MPD 2022-005-E Hawker Hurricane and Sea Hurricane: Undercarriage – Undercarriage Fork End Fittings – Inspection / Replacement Current 19 May 2022
MPD 2023-001-E Pipistrel Vertical Solutions d.o.o - Alpha BCAR-S 164: Flight Controls – Flaperon Bellcranck Bolt – Inspection Current 26 April 2023
MPD 2023-002-E Rotax 912 UL, 912 ULS, 914 UL and 912 iS Sport engines: Engine – Propeller Gearbox Magnetic Plug – Inspection / Propeller Shaft Replacement Current 11 August 2023
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