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

Flight Testing Aircraft The following current flight test schedules are available for printing. These schedules are subject to change at any time and without notice. Ensure that the current flight test schedule is used otherwise it may not be accepted. For this reason it is not advisable to save these document on your computer. Flight Testing Forms & Schedules Other useful documentation is as follows: TL 1.19 Initial Testing Flying Pilot Briefing for First Flight TL 2.00 Revalidating a Permit to Fly CAP 1038 CAA Check Flight Handbook TL 3.19 Auto-Pilot Flight Test Notes TL 3.22 Flight Test Reports TL 3.23 Constant Speed Prop Set-Up TL 3.25 General notes and limitations on test flights Airpseed Indicator Calibration Climb-Performance Plotter FAA Flight Testing Handbook

Revalidating a Permit to Fly Revalidating the Permit to Fly on your aircraft involves a simple three-step process, as outlined below: START APPLICATION HERE More detailed information is available by clicking the buttons below: Step-by-Step Video Guide TL 2.00 - Permit Revalidation Frequently Asked Questions Check Flight Form, PFRC & Inspector Crib Sheet

Certification & Approval 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 ? Downloadable Spreadsheets Technical Leaflets Design Tutorials

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

< Back MTD-04-2025 Issue 3 - Rans Control Linkage Rod End Connector Safety Washers 4 Dec 2025 MTD-04-2025 upissued to Issue 3 to amend the specification of the metal washers that must used to replace plastic washers. MTD-04-2025 Issue 3 is published in order to amend the specification of the metal washers that must be used to replace plastic washers. Therefore, MTD-04-2025 Issue 3 supersedes Issue 1 and 2. Issue 1 and 2 of this MTD are now cancelled. Please refer to the attached MTD document for full details and compliance instructions, which can also be found on the LAA website HERE . MTD-04-2025 - Rans Rod End Washers - Issue 3 .pdf Download PDF • 130KB Next Previous

< Back New LAA Alert for all Rotax 900 series engines 13 Dec 2024 The LAA has issued Alert A-04-2024 – Highlighting loose and broken engine mounting bolts on Rotax 900 series engines A recurring problem with Rotax 912/914 engines, equally applicable to the newer 915 and 916 models, is of the four M10 bolts that attach the engine’s crankcase to the engine mounting frame becoming loose in service. Most manufacturers call for the bolts to be wire-locked in place. However, in the case of the Rotax engine mounting bolts, it seems that the bolts are coming loose not because the bolts are undoing and backing off on their threads, but because of the joint faces become imprinted over time through creep, corrosion or fretting, allowing the tension in the bolt to be lost and the joint to become loose. These problems in the field are a reminder that where it’s critical that a bolt be torqued up, this should be checked at intervals (at least annually, we’d suggest) by undoing the locking and re-torquing them, before replacing the locking wire. Be sure this check is included in your aircraft’s maintenance schedule. DO NOT RELY ON A BOLT BEING WIRE LOCKED TO BE SATISFIED THAT THESE CRITICAL BOLTS ARE STILL TIGHT. A-04-2024 - Loose Rotax Engines .pdf Download PDF • 207KB Next Previous

< Back Armstrong / Isaacs Bursary 2025 30 May 2025 More information can be found here . Next Previous

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 . 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.

< Back LAA Open Day - Saturday 1st June 2024 9 May 2024 Flying in? PPR is needed. Contact: [email protected] Browse through our Flea Market table Meet LAA staff and Board Members Talk by Lucy Wootton our Chief Inspector on "How I got into flying" Instructors available to answer any questions you may have Browse through our retail shop for LAA merchandise, including charts, log books and clothing. A selection of LAA magazines available for free! Tea and coffee served in our members area and also a catering van will be available on-site for food and refreshments,. Next Previous

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

< Back MTD-03-2025 - Marquart Charger Aileron Slave Strut 25 Jul 2025 LAA MTD-03-2025 - Marquart Charger Aileron Slave Strut The starboard aileron slave strut on Marquart Charger G-BHBT failed at the AN490 threaded fitting welded into the bottom end. A large proportion of the cross-section was cracked due to fatigue prior to final failure. The root cause of the fatigue cracking was probably flutter. Due to the difficulty of reliably inspecting for fatigue cracking at the base of threads, it has been decided to withdraw this strut design from the UK fleet. MTD-03-2025 can be found HERE and is found below. MTD-03-2025 - Marquart Charger Aileron Slave Strut .pdf Download PDF • 194KB Next Previous