Aircraft Maintenance Before accessing the maintenance documents below, please ensure you have read Technical Leaflet 2.19 - General Maintenance Schedule . Technical Leaflet 2.19 Other useful documentation is as follows: Maintenance Schedules Sample Engine Condition Monitor Blank Engine Condition Monitor AC 43.13-1B Chg 1 CAP 562: CAAIP CAP 661: MPDs Latest MPDs - not in CAP 661 CAP 747: Mandatory Requirements Breaking in an Engine Engine Pre-Oiler Schematic Forms, Checklists & Worksheets

LAA Clubs & Struts FIND MY LOCAL CLUB/STRUT Local Clubs, or Struts, as many of them are called, look forward to welcoming you along as a friend and fellow LAA member. They are an excellent source of advice and help, whether building, buying, training or simply wanting to be involved in the local aviation scene. The Clubs and Struts also arrange a number of flying and social events throughout the year, and most hold monthly meetings. LAA TYPE CL UBS You can also find details of LAA-Type clubs by clicking the icon below. These clubs are associated to the LAA and are dedicated to a specific aircraft manufacturer or model. They can offer social activities and technical support for owners or those interested in a particular type.

Avgas UL91 & UL94 UL91 has been supplied at many airfields for a number of years. UL94 (similar to UL91 but with a slightly higher octane rating) is now becoming available. These fuels are suitable, and approved, for a wide range of engines types used in LAA aircraft. With 100LL being phased out over the coming years, now is an ideal time to see if your engine is compatible and help do your bit for the environment. The LAA Airworthiness Approval Note (AAN) for use of UL91 & UL94 in appropriate LAA aircraft can be found here . It contains a list of the most popular types of engines for which the fuel is suitable. The EASA document pertaining to use of UL91 in non LAA types is available here.

Light Aviation Magazine 2012 Click on the links below to open each issue of Light Aviation Magazine from 2012 January 2012 April 2012 July 2012 October 2012 February 2012 May 2012 August 2012 November 2012 March 2012 June 2012 September 2012 December 2012

For part-built LAA projects, the new owner/builder needs to continue following the LAA amateur-build process. For already-flying LAA aircraft, the new owner simply takes on the responsibilities of the old owner for looking after the airworthiness of the aircraft. The restoration of an aircraft might range from dusting off the cobwebs and giving the engine a good service, to a full strip down to component parts and fabricating missing or damaged parts. It is also possible, in some circumstances, to import a part-built or completed aircraft from overseas. This is generally only possible where the type is already accepted by the LAA, the aircraft can be shown to have been amateur-built under a similar regime to that in the UK, and which is readily inspectable to confirm the build standard. A number of LAA types come under the heading ‘orphaned vintage types’. These are types that are no longer supported by their manufacturer and have been deemed ‘orphaned’ by the CAA (e.g. Austers). There are also some types that can elect to operate either on a Certificate of Airworthiness or on an LAA-administered Permit to Fly (e.g. Chipmunks). Buying an Aircraft Not everyone has the inclination, ability or time available to build an aircraft. The only route then is to buy a part-built aircraft for completion, a ready-flying aircraft or an aircraft in need of restoration. When buying an aircraft, the overriding message is ‘Buyer Beware!’ If you’re buying an aircraft that is already flying within the LAA system, you mainly need to satisfy yourself that it’s in an acceptable condition and meets your needs. LAA Inspectors are often happy to look over an aircraft for you to help you make a technical assessment of its condition. Another area you should consider is whether it has enough payload to take you where you want to go. When buying a partially-built aircraft or one from overseas, you need to make sure that the aircraft is eligible to hold a UK Permit to Fly and is in a configuration that the LAA can accept. It is usually a good idea to drop LAA Engineering an email to check before you part with large amounts of money. For further information, click the button below or look in the 'Classifieds' section of the LAA Magazine Click here for more information

Armstrong/Isaacs Bursary applications now open! Winners of 2025 Bursaries below. Five bursaries of up to £1,500 are offered every year to support young pilots already in PPL training. To qualify for these bursaries you must be under 30, are required to already have reached ‘first solo’ standard, have completed a minimum of five hours solo training and have gained the necessary medical and ground qualifications to continue your training. To apply, please download and complete the application form below. AppYo Simon Grainger (above - left) Flying has been a dream of mine for as long as I can remember. The sense of freedom and the challenge of mastering flight are aspects that keep me motivated. In the future, I plan to become a flight instructor, sharing my passion with others while continuing to grow as a pilot. I see instructing not only as a way to give back but as a powerful opportunity to inspire and support the next generation of aviators. Being awarded the Armstrong Isaacs Bursary is a significant step in my journey and I am incredibly grateful for the opportunity. This support will allow me to continue my training with renewed focus and momentum, bringing me closer to achieving my goal of completing my PPL and becoming a fully qualified pilot. I would like to thank the LAA and its members for this opportunity, which I hope to repay in the future through continued involvement in the aviation community. Calvin Sucharov (above - right) I am currently working towards the navigation portion of the PPL and my plan is to continue with this and hopefully r I am currently working towards the navigation portion of the PPL and my plan is to continue with this and hopefully receive my licence in the SummerThanks to the LAA bursary, I can continue my flying training and hopefully become a CFI later on as I enjoy teaching and aviation - a perfect mix! I also plan on applying to university for aeronautical engineering so receiving this competitive bursary will hopefully help me to secure a place. I look forward to my solo cross country and flying to places such as Shoreham, Kemble and Popham, I just need the weather on my side now! Tom Hathaway (below - left) The Armstrong Isaac's Bursary has allowed me to accelerate progress in gaining my PPL, and a step closer to my dream of being a pilot. Without it, there is no doubt I would be a number of months away from completion, but with it I hope to be a PPL holder within a short number of weeks. I am extremely grateful for this opportunity and can't wait to get my remaining lessons booked! Armstrong/Isaacs bursaries are funded from the Armstrong/Isaacs Fund, which is based on a major donation from David Armstrong, who was a founder member of the original ULAA in 1947, a lifelong member of the LAA’s predecessor the PFA and the latter’s chairman from 1960 to 1964. His legacy, co-named with that of aircraft designer and builder John Isaacs, has, since 1998 enabled many young prospective pilots to gain their PPL. HOW TO APPLY All applications must be completed on the form below: APPLICATION FORM (Please complete in full) Please complete and email to [email protected] with the subject title Armstrong/Isaacs Bursary. It should arrive on or before the closing date of 1st March 2026. The LAA may contact you for further information, and may request an interview, if it is thought necessary.

Detail Design Having worked out a promising-looking layout, initial three-view and performance and weight specifications, now is the stage where the hard work begins of transforming concepts to working drawings. Essential decisions have to be made about types of material to be used, the structural arrangement, exact choice of powerplant and so on. You’ll probably need to make a cockpit mock-up to check the ergonomics and control system arrangements, and maybe build a flying radio controlled model of the design to give faith in the handling characteristics. With the basic geometry laid out, stress calculations and assembly drawings come next, then drawings of individual piece parts. Keep an up-to-date tally on weights. As the drawings get more detailed you must re-evaluate whether you are going to meet your original targets in terms of weight, strength and aerodynamic cleanliness, whether you need to re-visit your original assumptions or re-design from scratch. Is there a way that the part or assembly can be made more easily, more cheaply, lighter, stronger, more fatigue or corrosion resistant? Fewer parts and fewer joints generally means fewer problems and less weight. Can you use off the shelf parts rather than having to make them specially? Are there other aeroplanes around that have already solved a particular problem in a clever way? Will the aircraft be easy to inspect in service, easy to repair if it gets damaged? Can it be broken down for transportation? If the handling isn’t quite right when the prototype is test flown, does the design make provision for ‘tweaks’ to put it right? Does the design include reserves of strength to cope with weight growth in service and more powerful engines, or is everything pared down to the minimum? Design Tutorials

Continuing Airworthiness Information One of the key strengths of the LAA's system is that we can monitor the fleet centrally and keep track of airworthiness incidents from around the world. Where necessary, we can then let our owners know, to help them keep flying safely. A full listing of Airworthiness Alerts, Technical Service Bulletins and Mandatory Technical Directives can be found below: ALERTS, TECHNICAL SERVICE BULLETINS & MANDATORY TECHNICAL DIRECTIVES

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

Membership Full Plus Category is for members who own, operate or are currently building an aircraft and gives access to LAA Engineering services. (For Group Owned aircraft, at least one member of the group must have Full Plus membership.) Full Category is for everyone else and includes a monthly copy of Light Aviation Magazine and a discount at the annual LAA Fly-In. JOIN THE LAA Member Full - £72 Full Plus - £113 Member Joint Full - £82 Full Plus - £134 Joint members are members who are the partner of a full member or any children under the age of 18 and living at the family house. Under 30 Member Full - £30 Full Plus - £134 Please forward proof of DOB i.e. copy of passport, driving licence or pilots licence. Overseas Member Full - £88 Full Plus - £134 Overseas includes Eire. Payment Methods ONLINE Via the Member Area / Renew my Membership DIRECT DEBIT You are now able to set up your direct debit online. Please see your renewal or joining page for details. BY CALLING HQ 01280 846 786 with card details NOTE: Permit Revalidation payments are taken ONLINE only through the Permit Revalidation online system BY INTERNET BANKING Account No : 26225220 Sort Code : 60-30-03 Please note, for membership payments, you MUST quote your membership number and your surname or your payment will not be credited to the correct record. For Permit revalidation & engineering fees, you MUST quote your aircraft registration. If paying from abroad, SWIFT code is : NWBKGB2L IBAN code is : GB81 NWBK 6030 0326225220 Important Links RENEW MY MEMBERSHIP MY AIRCRAFT DETAILS MEMBER AREA ADDRESS CHANGE

Rotax Carburetted 912/914 Installation & Operation Price Member - £206, Non-Member - £226 Duration Arrival 09:30. Finish 17:00. < Back About the Course Kevin Dilks of SAS, a well-respected and Rotax trained engineer, has many years of experience in the field and will be hosting this course at the LAA’s Training facility at Turweston. The course covers everything those who own/operate a carburetted Rotax 912 (UL, ULS and 914 turbocharged) engine need to know about getting the best out of these very popular engines and keeping them in tiptop condition. Your Instructor Kevin Dilks Dates Saturday 17 January 2026 Times Arrival 09:30. Finish 17:00. Duration One day course Venue LAA HQ, Turweston Aerodrome, NN13 5YD Price Member - £206, Non-Member - £226 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