The Light Aircraft Association (LAA) is the UK’s principal representative body for amateur-built and vintage light aircraft, as well as supporting some factory-built microlights and gyroplanes. WELCOME TO THE LIGHT AIRCRAFT ASSOCIATION NINE REASONS TO JOIN THE LAA 1 BUILD YOUR OWN AIRCRAFT The LAA was formed out of the amateur aircraft building movement. Even today, you can build an aircraft from the original plans or purchase a modern kit from a recognised manufacturer to build your dream aircraft, with the support of an LAA Inspector. There are so many types to choose from! More Info 2 PILOT COACHING The Pilot Coaching Scheme includes provision of Biennial Reviews and Class Rating Revalidation, as well as Type Conversions, Renewal Training, Differences Training and Licence Migration. Coaches are based all over the UK and willing to travel to meet your needs! More Info 3 LIGHT AVIATION MAGAZINE Our full-colour monthly magazine, Light Aviation , is free to all members and is packed with a wealth of technical and flying information, first-hand reports of members’ flying adventures and aircraft builds, in depth flight tests and so much more – it’s real cover to cover reading every month! More Info 4 ENGINEERING FACILITIES At our core is the amateur built aircraft movement and the comprehensive engineering facilities that support the Permit to Fly airworthiness system. A full time staff of qualified engineers and a countrywide network of Inspectors help make owning and flying your own aircraft both possible and affordable. More Info 5 TRAINING COURSES The LAA provides a wide range of courses for members, ranging from electrics to working with aluminum, aircraft carpentry, composites, Rotax engines or even an Air to Ground Radio Operators' Course! These will help you build or maintain your aircraft to the highest standard and meet LAA members with similar interests. More Info 6 OPERATE AN AIRCRAFT With the LAA fleet size ever increasing, more and more LAA members are operating LAA aircraft that they have not built under the LAA Permit to Fly Airworthiness System. The LAA Engineering Department offers the support you need to fly! More Info 7 MEET FELLOW AVIATION LOVERS! Do you want to meet fellow light aviation lovers? Clubs for LAA members (also known as Struts) meet at a local level to share knowledge and experiences, as well as take part in local events. You can find the 'Strut' nearest to you! More Info 8 MEMBER DISCOUNTS Every year, the LAA hosts a 'fly-in,' known as the 'LAA Rally' or more recently, the 'Grass Roots Fly In.' LAA members benefit from a discounted entry fee! Furthermore, there are a number of LAA-friendly companies that offer discounts and deals to LAA members. These can be found by clicking the button below. More Info 9 MEMBER REPRESENTATION We have an enviable reputation for determination and fairness within the corridors of power in the UK and Europe. We are one of the principle representative groups providing balanced consultative input on matters such as airspace, planning and safety regulation to bodies including the Department for Transport and Civil Aviation Authority. More Info Contact Us Turweston Aerodrome Nr Brackley Northants NN13 5YD Office Phone No: +44 (0)1280 846 786 Office email: [email protected] Engineering email: [email protected] Our office opening hours are Monday to Friday, 9am to 5pm Download Map Local Accommodation

E10 Mogas From 1st September 2021, the government mandated that all regular grade unleaded petrol must contain up to 10% ethanol, rather than up to 5% as previously. In the autumn of 2021, most filling stations around the UK re-marked their E5 petrol pumps to show that they now supply E10 specification fuel, and started receiving tanker-loads blended with up to 10 percent ethanol content. For the automotive world this means reduced carbon dioxide emissions, which is better for the environment, and, arguably in terms of eco-desirability, a small further reduction in the reliance on fossil fuel. The automotive industry had been preparing for this change, and people with road vehicles registered after 2002 should be able to switch to E10 without noticing any difference. Unfortunately, the additional ethanol content is bad news for aviation users if we were to ignore the change and start putting E10 in our aircraft regardless. Ethanol is a powerful chemical solvent which can attack components including rubberised gaskets and fuel pipes, older lacquered carburettor floats and composite or plastic components in some newer fuel systems. The doubling of the concentration of ethanol in E10 compared to E5 makes it much more likely that problems will be experienced if these parts are not designed to be ethanol-proof. Ethanol also has an affinity for absorbing water, which over time can then become acidic, attacking metal components in the fuel system and engine. Even if there was a practical way to do so in the volumes of fuel we use in our aircraft, we cannot safely remove the ethanol content from the fuel because the ethanol acts as an octane enhancer, so the washed-out fuel would be left with a reduced octane value, likely to cause detonation problems. Another issue is that ethanol-blended fuel has a lower energy density than petrol, so to develop full power from our engines using an E10 fuel, we may need to richen the fuel/air mixture, for example using a bigger carburettor jet size. Owners of Rotax and Jabiru engines are probably already aware that many of these engines are supplied as being able to use E10 fuel – though with Jabiru engines, in particular, it’s far from straightforward because some of the earlier engines require cylinder head modifications and reduced compression ratio if they are to avoid detonation issues when using any form of Mogas. Jabiru also say that Mogas of any type should not be used in commercial flight schools and only at the owners own risk. Even with a supposedly E10-compatable engine, the chemical compatibility problems with fuel system components are such that the LAA does not at present approve the use of E10 Mogas in any LAA amateur-built or vintage aircraft. For factory-built microlights and factory-built gyroplanes, where LAA is not the approving authority but only renews the CAA’s Permits to Fly, owners need to refer to the TADS for the types for details of the approved fuel types, and monitor the service bulletins from the approved manufacturers for news of any updates. Where we need to be particularly careful in reading-across from (hopefully) a trouble-free transition to E10 in automotive use is the big difference between our petrol cars and the way our aircraft engines are configured. Our cars generally have submerged fuel pumps in their petrol tanks and a sealed fuel system. In our aircraft we have an open-vented tank and usually a fuel pump several feet away, often mounted in a hot area of the engine bay near to the engine exhaust, dragging the fuel through a fairly convoluted pipework system, a filter and fuel selector – all features encouraging a vapour lock - and then to make matters worse we want to climb up to altitude and operate in reduced atmospheric pressure. Modern petrol cars have a fuel injection systems rather than carburettors, a circulating fuel system designed to purge any vapour forming in the fuel line, and an ECU that monitors the engine’s parameters constantly and adjusts the fuel mixture strength and ignition timing to prevent damage to the engine – and if all else fails and the engine should ‘pink’, we can hear it from the driver’s seat and drop a gear to lighten the load. Because of the much higher background noise level in our aircraft, detonation cannot be heard and the pilot’s first indication of a problem may be when the first piston crown disintegrates, or a valve head departs its stem. In conclusion - E10 is presently not approved for use in any LAA aircraft. ‘Hoping for the best’ and using E10 fuel in your aircraft regardless could risk ruining the fuel system components, fibreglass tanks falling to bits, engine failure through contamination of the fuel or ruptured fuel pump diaphragms etc, or more serious engine damage. For most of our engines, UL91 Avgas is the best choice, but 97 octane E5 Super Unleaded remains an alternative to the now-obsolete E5 spec Mogas.

LAA Member Discounts

Light Aviation Magazine 2021 Click on the links below to open each issue of Light Aviation Magazine from 2021 January 2021 April 2021 July 2021 October 2021 February 2021 May 2021 August 2021 November 2021 March 2021 June 2021 September 2021 December 2021

Rotax Carburetted 912/914 Installation & Operation Price Member - £213, Non-Member - £233 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 New date tbc Times Arrival 09:30. Finish 17:00. Duration One day course Venue LAA HQ, Turweston Aerodrome, NN13 5YD Price Member - £213, Non-Member - £233 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**

LAA are proud to announce our Rally 2025 sponsors Entrance Fees All fly-in slot bookings for the event are available via the Eventbrite (coming soon) booking website. Member and public entrance tickets can be bought in advance via the LAA Shop. There is free car parking and provision for disabled parking on site. For those arriving by road, Leicester Airfield is easily reached from the north and southwest via J21 on the M1; A563 Sth Leicester Bypass to B582 Gartree Road. Routes from the East and South East via A47 and A6. No dogs are allowed airside BY AIR One landing fee of £10.00 covers a single landing and stay of up to three days and camping by your aircraft. Pilots and accompanying passengers will also need to purchase individual entry tickets to the Rally - available via the LAA Shop . If flying in, you will need to book a slot. PLEASE NOTE ANY FURTHER LANDINGS WILL BE CHARGED. (Local evening flying will be available and not charged) Members : INCLUDES AIRSIDE ACCESS £25 (for all 3 days) LAA, BMAA and BRA members - Please bring proof of membership by way of showing your receipt or mobile phone with membership details. More details on how to find this will be emailed to all members nearer the time. Non-Members £25 for One Day Ticket (does not include airside access) Special Offer!!! Non Member Three Day Ticket (including airside access) for £50. This offer is available until 31st July 2025. Non-Members AIRSIDE ACCESS £15 for One Day Ticket Children 16 and under go free.

LAA Rally 2025 "Inspired to Fly" LAA are proud to announce our Rally 2025 sponsors We are pleased to announce that the LAA Rally will be held in conjunction with Leicestershire Aero Club at Leicester Airfield on 29th-31st August 2025. Are you interested in sponsoring the event or advertising in the Weekend Show Guide? OR Do you want to display your aircraft project in the Homebuilders tent? Contact Nancy Lillington at [email protected] WELCOME TO THE LAA 2025 RALLY FLY-IN ENTRANCE FEES GENERAL INFORMATION FLYING IN & BOOKING A LANDING SLOT CAMPING & ACCOMMODATION EXHIBITOR INFORMATION OPENING TIMES & CAR PARKING OTHER ATTRACTIONS TROPHIES & AWARDS

LAA are proud to announce our Rally 2025 sponsors Exhibitor Information TERMS & CONDITIONS LAYOUT OUTSIDE PRICES BOOKING FORM LAYOUT INSIDE MARQUEE

Permit Aircraft Electrics - Basic Course Price Member - £224, Non-Member - £244 (includes printed course material) Duration Arrival 09:00. Finish 17:00. < Back About the Course This course provides the theory and practical knowledge to enable the implementation of a basic electrical system in permit aircraft. Although the course necessarily includes a small amount of technical theory; it is only included at a level needed (essentially Ohms Law) to understand how wire sizes, fuses, circuit breakers and other components etc are selected. The basic premise of the introductory course is that the owner/builder already has a circuit diagram to work from (few kit manufacturers provide electrical diagrams, so the course includes details of where such ‘standard’ diagrams may be found). They are not expected to do any design work, but they do need to source the materials and components and build a working, reliable and safe installation. The course explains how to interpret a ‘typical’ permit aircraft electrical systems diagram and for every element, explains how to size, select and source components and then how to practically install them. The course uses a PowerPoint presentation for the theory side, a demonstration electrical panel in the classroom so that attendees can see the various options and good practice for wiring and systems installation and also runs two practical sessions in the LAA workshop which includes practical soldering, wire stripping and connector crimping, cable marking options, use of heat shrink, radio antenna coax connector installation and the correct crimping and installation of typical D Sub connectors used for avionics systems. What this course will try to do is: Introduce and explain the components of a wiring system Help you understand a circuit diagram Give practical experience in wiring techniques Give the knowledge to select and source cables and components Explain failure modes and reliability issues Help you conduct basic fault finding Warn about the ‘gotcha’ areas and the things to look out for What the course will not do is: Turn you into a design engineer Enable you to design an aircraft EWIS Enable you to fault find on an undocumented aircraft installation Solve interference issues Delve into avionics Your Instructor Mark Castle-Smith Dates Date tbc Times Arrival 09:00. Finish 17:00. Duration One day course Venue LAA HQ, Turweston Aerodrome, NN13 5YD Price Member - £224, Non-Member - £244 (includes printed course material) 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**

Light Aviation Magazine 2016 Click on the links below to open each issue of Light Aviation Magazine from 2016 January 2016 April 2016 July 2016 October 2016 February 2016 May 2016 August 2016 November 2016 March 2016 June 2016 September 2016 December 2016

Permit Aircraft Electrics - Advanced Course Price Member - £224, Non-Member - £244 (includes printed course material) Duration Arrival 09:00. Finish 17:00. < Back About the Course The Basics course covers simple DC theory and concentrates on the practical aspects of installing a basic permit aircraft electrical system. The course explains how to interpret a ‘typical’ permit aircraft electrical systems diagram and for every element, explains how to size, select and source components and then how to practically install them. This Advanced course builds on the Basics course by providing more detail about component selection and options and the use of integrated power management systems within permit aircraft. The course takes the simple systems design introduced in the Basics course and explores options for creating more complex electrical systems including the use of dual and essential system bus bars. The course introduces fault tolerant design considerations, thus allowing attendees to consider safety and fault analysis in their own designs. As a tool for understanding this aspect of the course, it will take an introductory look into the requirements of electrical systems for those wishing to fly their aircraft under IFR. What this course will try to do is: Explain power generation and distribution options in a light aircraft More advanced consisderations into component selection Discuss circuit protection devices and systems Explain failure modes and reliability issues Introduce interference and EMC issues Show correct grounding and screening techniques Provide you with the knowledge to plan an installation and create the necessary documentation Warn about the ‘gotcha’ areas and the things to look out for What the course will not do is: Turn you overnight into an expert Enable you to fault find on an undocumented aircraft installation Delve inside avionics boxes It will be useful, but not essential, for people to have previously attended the Basic course. In order to make the best of this course, if you have not attended the basics course, you will need to understand basic DC theory; Ohms Law and the Power Law. Please note that this course is primarily a classroom based course, as you will already have the practical skills you need, which are covered in the basics course. Your Instructor Mark Castle-Smith Dates Saturday 18 April 2026 Times Arrival 09:00. Finish 17:00. Duration One day course Venue LAA HQ, Turweston Aerodrome, NN13 5YD Price Member - £224, Non-Member - £244 (includes printed course material) 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**

< Back Engineering Employment Opportunity 13 Jul 2023 Want to take the next step in your Aviation Engineering career? Then join the Light Aircraft Association Engineering Team and help keep the UK’s largest fleet of vintage and light sport aircraft flying! We have vacancies for Airworthiness Engineers at all levels to be part of the LAA team based at Turweston. The successful applicants will be responsible for all aspects of continued airworthiness for the LAA-administered fleet of aircraft. Main duties will include the analysis of data from many sources to identify and communicate opportunities to improve the airworthiness of our fleet of nearly 3,000 aircraft. This will include working with manufacturers, the Air Accident Investigation Branch, LAA Inspectors and engineers and the LAA design team, as well as providing technical assistance to LAA members, writing technical articles for our own Light Aviation magazine, and assisting with Permit to Fly revalidations. The ideal applicants will demonstrate experience in all aspects of general aviation airworthiness, including a knowledge of airframes, engines and aircraft systems. A knowledge of vintage aircraft, as well as newer LAA types and modern avionics, would be advantageous. Inspired? Then we’re keen to create exciting career paths for the right individuals and will provide development, training and certification accordingly. Candidates should be IT competent with Microsoft Office, have a friendly personality and the ability to work within a small team and also independently. Excellent communication skills are required and attention to detail is essential. These are full-time posts, mainly based at LAA HQ but with potential for hybrid/remote working and site visits. Salary dependent on experience. Send your CV to [email protected] , and fly high with LAA. Next Previous