Modifying & Repairing Aircraft One of the main features of the LAA system is that modifications and repairs can be approved with significantly reduced costs compared with aircraft on Certificates of Airworthiness, where applicants would need to deal with the CAA or EASA. Since the engineering team are all ‘little aircraft’ experts, it is usually a straight-forward job to approve many types of change. Of course, with many of our members being so creative, sometimes the job takes a little more time and thought to approve! View current mod/repair application queue Modifcation Type Description Further Details Application Form Application Fee Category Changes Applications to change an aircraft’s category from a microlight to a ‘Group A’ aircraft (and vice versa) are allocated a modification number to record the change. If an engine or propeller change is required at the same time, then an application must be made as noted above. N/A LAA/ MOD 10 £206 Engine & Propeller Changes These are treated as Prototype or Repeat modifications, unless they appear on the PTL list for the type. Technical Leaflet TL 3.02 LAA/MOD 4 and LAA/MOD 5 * See below Avionics Installations These are not considered modifications, but in order to fulfil their legal obligations, owners are required to keep LAA up-to-date should radio details alter. A special system exists for the approval of radio changes that is separate from other modifications. Technical Leaflet TL 3.03 LAA/MOD 7 No charge for radio/transponder installations, but a £31 fee is chargeable for certified ADS-B Out applications STCs Where a change has previously been approved by means of a Supplemental Type Certificate (STC), an LAA Inspector can sign off the change. Technical Leaflet TL 3.29 N/A N/A The Trivial Change Sometimes a change is so trivial that no application is required and there is no need to inform the Engineering department. Technical Leaflet TL 3.10 N/A N/A Manufacturers' Modifications Kit manufacturers and plans suppliers often have long lists of optional modifications that can be fitted and during the lifetime of a type product improvements are introduced. Generally, LAA-accepted optional items are listed on the TADS for the type. N/A N/A N/A The Standard Modification This is a modification that is very well defined and is applicable to a particular aircraft or engine type or types. Members may nominate new Standard Modifications using form LAA/MOD 9; however, LAA Engineering may choose to convert popular Repeat modifications into Standard Modifications. Technical Leaflet TL 3.06 LAA/MOD 1 Variable, see individual mods for details The Repeat Modification A modification that has already been approved on one aircraft as a Prototype modification. Note that a Repeat modification must identically replicate the original Prototype modification including fasteners and positions of parts and should generally be on the same aircraft type as the original. Technical Leaflet TL 3.07 and TL 3.17 LAA/MOD 11 * See below The Prototype ("normal") Modification This is a normal modification application made in the usual way and is applicable only to the aircraft for which the application is made. Technical Leaflet TL 3.01 LAA/MOD 2 and LAA/MOD3 * See below * All prototype modifications (including engine and propeller changes) attract a minimum fee of £103 which covers up to two hours' work; all repeat modifications (including engine and propeller changes) attract a minimum fee of £52 which covers up to one hour's work. Thereafter, work is charged at £57/hour in either case. See the relevant Technical Leaflet for the type of modification for further details. To access the Technical Leaflets, MOD forms and Standard Modifications described above, click one of the buttons below: Technical Leaflets on Modifications & Repairs LAA MOD Forms Standard Modifications

MAGAZINE ARCHIVE Our magazine archive is available for all members to view in the Members Area. This is an ongoing project. For our latest magazine, of course, you'll need to be a member. A previous copy of Light Aviation can be viewed by clicking on the link below Light Aviation ENGINEERING INFORMATION Light Aviation magazine keeps you informed of engineering issues to help you ensure that your aircraft is kept in tip top condition. Our 'Engineering Matters' articles will form a vital information source for future reference. Light Aviation Magazine Light Aviation magazine brings you exciting articles about what LAA members are building, restoring and flying. Also included are reports on all the major rallies and GA shows and information about new products and services. ADVERTISING, CLASSIFIED & CONTRIBUTION DETAILS If you wish to advertise in Light Aviation: For display and commercial advertising, please contact Phil Johnston to discuss your requirements. For classified ad queries please contact LAA Office . Classified ads and photos can only be accepted by e-mail . Classified ad fees can be found below. The Editor, Ed Hicks , is always keen to receive your contributions of articles, pictures, technical ideas and letters. Up to 30 words Member: £6 Non-Member: £22 31-50 words Member: £12 Non-Member: £44 Up to 50 words with a coloured photo Member: £45 Non-Member: £60

Light Aviation Magazine 2020 Click on the links below to open each issue of Light Aviation Magazine from 2020 January 2020 April 2020 July 2020 October 2020 February 2020 May 2020 August 2020 November 2020 March 2020 June 2020 September 2020 December 2020

LAA Type Clubs British Rotorcraft Association W: www.britishrotorcraftassociation.org T: 07841870568 E: [email protected] Pietenpol Club W: www.pietenpolclub.uk E: [email protected] The Aeronca Club of Great Britain W: www.aeronca.co.uk T: 01752 406 660 E: [email protected] The Europa Club W: www.theeuropaclub.org E: [email protected] Vintage Aircraft Club W: www.vintageaircraftclub.org.uk E: [email protected] Vintage Piper Aircraft Club W: www.vintagepiper.co.uk E: [email protected] International Auster Club W: www.austerclub.org British Women Pilots' Association W: www.bwpa.co.uk E: [email protected] Beagle Pup & Bulldog Club W: www.bpbc.uk T: 07985 430265 E: [email protected]

Strut Governance Documents Strut Governance Documents Electronic versions of the Strut Event Management Procedures can be found below. Click each document to access it online. Updated April 2019 Member Club Regulations The Member Club Regulations describe the manner in which an LAA Member Club should form, govern its affairs and conduct its activities. Strut Event Management Procedure Procedures for Strut events (fly-ins etc..) Annex A Normal and Prohibited Club Activities Annex B Summary Insurance Certificate for Member Clubs of the LAA Annex C LAA Member Club - Event Notification Annex D LAA Club Event Risk Assessment (air side/ground activities) Annex E Event Safety Review and Operations Summary Annex F Third Party Passenger Flying at LAA Member Club Events Annex G Incident Checklist / Incident Plan Appendix 1 TPPF Pilot and Aircraft Checklist Appendix 2 Indemnity Agreement Appendix 3 Information for those Attending an LAA Member Club Flying Event Model Club Constitution A model constitution for member clubs

Info Library Navigate the folders below for any document that you require, like you would on your computer. To search for a particular document, use the 'magnifying glass' symbol below on the right.

Rotax Fuel Injected 912 iS / 915 iS Installation & Operation Price Member - £224, Non-Member - £244 Duration Arrival 09:30. Finish 17:00. < Back About the Course With the growth of interest in the fuel-injected Rotax 912 and 915 iS series engines, it has become apparent that there is a lot of confusion and misunderstanding about the installation and operation of these engines and the way that the latest built-in systems work. Electronics and Rotax iRMT certified engineer, John Barrott, was an early installer of a 912iS and found it difficult to find accurate information on best practice. Working with UK Rotax agents CFS and LAA Engineering, John has built up a comprehensive understanding of the iS engines and has developed a course around this to provide help and advice on the installation and operation of this new generation of aero engines. The course is classroom (not workshop) based. Your Instructor John Barrott Dates Saturday 21 February 2026 Times Arrival 09:30. Finish 17:00. Duration One day course Venue LAA HQ, Turweston Aerodrome, NN13 5YD Price Member - £224, Non-Member - £244 Booking Pls call the LAA on 01280 846 786 to enquire/book or email [email protected] . *Please note that payment is required when booking, to confirm your place. NO place will be held without confirmed payment* **Please note that your booking payment is non-refundable unless we can fill your place timeously or there are exceptional circumstances**

Ethanol-Free Mogas Please select the appropriate engine type link below where you will find information describing how to obtain clearance for an aircraft to use unleaded Mogas. For Rotax, Jabiru and VW engines, please see the E5 Mogas page. Continental Hirth 2 Stroke Lycoming Related Information Operating Information TL 2.20 Fuel Flow Checking Inspection Checks - Fuel Flow EASA Investigation on MOGAS EASA has issued the Final Report of the Safety Implications of Biofuels in Aviation (SIoBiA) This project was undertaken by the University of Aachen under a research contract to EASA. The Light Aircraft Association was represented during this project by Barr y Plumb, who was a member of the project steering committee. All aspects of t he use of Mogas containing biofuel additives were considered in the research programme and the final report from the project is now publicly available here . This is a summarised version of the SIoBia findings. Placards Cockpit Placard Fuel Filler Placard

< Back LAA Inspector Seminar 14 Feb 2024 Last Thursday, 16 Inspectors attended an Inspector Training Seminar at the Imperial War Museum, Duxford, run by our Chief Inspector Lucy Wootton, with the assistance of our Head of Flight Test, Andy Draper and Airworthiness Engineer, Cris Fernandez. LAA Inspectors are required to attend training once every four years. We had a great day - lots of knowledge shared and interesting discussions. Next Previous

< Back AGM The awards ceremony will start at 11.30 a.m. Registration for entry into the AGM will be open at 10.45. For more details, please see link below. https://www.lightaircraftassociation.co.uk/agm2025 Next Previous

< Back The online Permit Revalidation System is live for Gyroplanes! 22 Jul 2025 We are pleased to announce that the online Permit to Fly revalidation system went live today for gyroplanes, both home-built and factory-built! Step-by-Step Video Guide, FAQs and Crib Sheet The step-by-step guide to the new online Permit Revalidation system in the form of an ‘ Online Permit Revalidation Explained ’ video can be found below. This was written for a fixed-wing example, but the majority of questions are the same for gyroplanes and the process for gyroplanes has the same three stages as for any fixed-wing aircraft. https://www.youtube.com/watch?v=rOGRQ89dOA8 We have also compiled a list of ‘ Frequently Asked Questions ’ for you, which are found below. The ' Crib Sheet ' for Inspectors referenced in the video is formally called the ' Airworthiness Review Reference Guide ' and is available HERE . There is a version of the crib sheet for homebuilt gyroplanes, entitled ARR-REF (HOMEBUILT GYROPLANE) and a version for factory-built gyroplanes, entitled ARR-REF (FB GYROPLANE). The Check Flight Schedules for both homebuilt and factory-built gyroplanes have now been combined into a single check flight schedule for gyroplanes, entitled CFS-1 (GYRO). This is available HERE . Previous check flight forms for homebuilt and factory-built gyroplanes are now obsolete. The Permit Flight Release Certificate (PFRC) is now a separate document, where it was previously contained within the application form for revalidating a Permit to Fly. It can be found HERE . Key Considerations There are a few key considerations to ensure a Permit to Fly revalidation under the new system goes smoothly: Please make sure you know your username and password for the LAA website. If you have forgotten your login details, please contact the LAA Office. All aircraft using the new system for the first time will require a check flight no older than 3 months at the time of submission of the revalidation application. This is in order to provide a baseline for the online system. The 3-year check flight cycle will then apply subsequently to most aircraft types. Some aircraft will still require a check flight at every revalidation, these are: Aircraft cleared for Night/IFR. Aircraft which have flown less than 12 hours since the previous revalidation inspection. Aircraft Owners will not have to submit a CFS-1 (GYRO) Check Flight Schedule when applying through the new system. However, a CFS-1 (GYRO) will need to be completed for each check flight and stored with the aircraft’s documentation, so that it is available when needed. We will no longer be accepting old-style (paper or scanned) Airworthiness Reviews for homebuilt or factory-built gyroplanes conducted on or after 22 nd July 2025. Need Help? The ‘Revalidating a Permit to Fly’ page on the LAA website signposts you to all the information you will need and can be found HERE . If you have any problems or questions, please follow the steps below: Watch the ‘ Online Permit Revalidation Explained ’ video found HERE . Read Technical Leaflet 2.00 - 'Revalidating your Aircraft's Permit to Fly,' which has now been updated to include information for gyroplanes. Look at the gyroplane variants of the 'crib sheet' for LAA Inspectors, entitled ' Airworthiness Review Reference Guide ,' which is available HERE . Look at our list of FAQs ,. If steps 1-4 do not help you find the answer, contact LAA Engineering on [email protected] or call (0)1280 846786 20250721 - Permit Revalidation Process FAQs Issue 2 .pdf Download PDF • 198KB Next Previous

< Back Two new LAA Inspectors appointed 28 Sept 2023 Congratulations to our latest LAA Inspectors, Luke McMillan and Gareth Rutt. Luke and Gareth both came to LAA HQ at Turweston last Thursday for 'Induction, Examination and Interview Day' with our Chief Inspector, Lucy. We wish Luke and Gareth well as they start this exciting new chapter! Next Previous