< Back Mandatory Technical Directive issued for Chipmunk aircraft 24 May 2024 Mandatory Technical Directive, MTD-04-2024 has been issued by our Head of Airworthiness, Nick Stone, today to introduce mandatory recurring inspections of the flap operating cables following a recent potentially serious incident where one of the flap cables on a Chipmunk failed in flight, leading to an asymmetric flap configuration. The MTD allows a 5 flying hour period of grace before the inspection must be carried out and is being emailed today to all owners of LAA Chipmunks and all LAA Inspectors approved to inspect Chipmunks. Next Previous

< Back Aerobatics Course bursary for LAA Members!!! 6 Jun 2025 These bursaries are available thanks to the generosity of LAA member John Rowlinson and his company PTS. You must be an LAA member to apply. Please send an email with the subject line Aerobatics and we will get back to you. Next Previous

Over the years this has led to several commercially successful kitplanes (Europa, Streak Shadow, Sherwood Ranger), as well as designs that have been released for plans-building (Flitzer, Isaacs Fury, FRED) and a whole range of fascinating on-off personal aircraft – the Acro Advanced, Bonsall Mustang, Mickleburgh Sparrow to name just a few. There will always be LAA’ers keen on the ‘retro’ look, but with ever-increasing fuel costs we foresee a greater emphasis in future on aircraft exploring higher efficiency, alternative powerplants (electric?) and renewable materials. High hangarage fees mean that aircraft enthusiasts are more than ever interested in folding or de-riggable aircraft that can be kept at home. Using the information provided by clicking the links below, the LAA hopes to stimulate interest in light aircraft design, help potential designers through the process and encourage the development of high quality designs. With the decline in UK manufacturing over the recent decades, it seems more than ever important to keep alive a thread of creativity and enthusiasm for design and development. For some, the ability to bring a personal design from first concept to a flying prototype provides the ultimate source of satisfaction within the LAA scene. Designing Aircraft Since its formation in 1948, one of the stated aims of the LAA has been to encourage the designing and building of new types of light aircraft. For our own purposes, we in LAA Engineering have been producing a series of Excel spreadsheets to use as tools in the verification of calculations in the many aircraft design submissions we deal with. The spreadsheets have been designed to carry out the various calculations that are necessary during the design of light aircraft. Some of them have been written against specific paragraphs in the design code CS-VLA, whereas others, for example, cover areas related to the development of aircraft undergoing flight testing. In addition, simple spreadsheets for straightforward mathematical calculations have been written. It is for information and educational purposes that these spreadsheets are now available to LAA members on the LAA web site. Use the buttons below for more information on each design stage: Preliminary Design Detail Design Certification/Approval

< Back Engineering updates in February and March 11 Apr 2025 The following documents have been issued/updated in the Engineering 'Info Library' during February and March. Technical leaflets : TL 1.10 - List of aircraft parts and materials suppliers TL 2.01 - A guide to LAA aircraft ownership TL 2.22 - Non-type specfic MPDs TL 3.25 - Flight test briefing Continuing airworthiness information : Alert A-01-2025 - Piper rudder post Alert A-02-2025 - Rotax crankcase Alert A-03-2025 - Gen 4 Jabiru 2200 and 3300 engines TADS : Brandli Cherry Cessna 120 Eurostar Groppo Trail Rans S5 (204 and 204B) Rotax 4-stroke Sportcruiser Next Previous

< Back Alert A-07-2025 - Glastar Aileron Servo-Tab Pushrod Cracking 25 Jul 2025 LAA Alert A-07-2025 - Glastar Aileron Servo-Tab Pushrod Cracking A cracked aileron servo-tab pushrod was found on a UK Glastar aircraft. The pushrod consists of a thin-walled aluminium tube with an adjustable clevis at one end, and a fixed clevis at the other. The crack was at the adjustable end of the pushrod, and extended from the end of the aluminium tube to the hole approximately 1 inch from the end. A cracked aileron servo-tab pushrod must be considered unairworthy, and replaced before further flight. A-07-2024 can be found HERE and is also attached. A-07-2025 - Glastar Aileron Servo-Tab Pushrod Cracking .pdf Download PDF • 562KB Next Previous

< Back New LAA Inspector - Craig Ransome 16 Mar 2026 We are pleased to welcome Craig Ransome as a new LAA Inspector, having attended an LAA Inspector Assessment Day at Turweston recently. Craig is an apprentice-trained B1 Licensed Aircraft Engineer who began his career as a Production Fitter with British Aerospace, working on the assembly of military aircraft. He later moved into the commercial aviation sector, gaining experience with several airlines and developing a broad range of maintenance skills. He achieved B1.1 (turbine aeroplanes) and later B1.2 (piston aeroplanes) licences, demonstrating proven capability in aircraft maintenance, fault diagnosis, and airworthiness certification. Next Previous

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

< Back Christmas 2025 Closing Dates The LAA will close on Wednesday 24th December at midday and re-open on Monday 5th January 2026. Wishing all our members a Very Merry Christmas and a Happy New Year! Next Previous

Flying into Leicester If you intend to fly into the LAA Rally at Leicester, you will need to book an arrival slot. These will be available via Eventbrite nearer the time. Should you wish to fly-in on more than one day a separate slot will be required for each landing. Arrival and Departure Procedures The Pilot Notes for the LAA Rally at Leicester Fri 4th September -Sun 6th September will available nearer the time. The slot booking system will be live soon. Slot bookings can be booked and purchased via the Eventbrite website. Please ensur e that you are familiar with the procedures before flight. Please also note the RAT in force for the Victory airshow at Cosby approximately 7.5m SW of Leicester airfield and plan your approach to and departure from the Rally accordingly. For any pilot booked-in for the Thursday normal aerodrome procedures apply. Leicester will have copy of your slot booking. One landing fee of £10.00 (+ booking fee) covers a single landing and aircraft parking of up to three days and camping by your aircraft. Pilots and accompanying passengers will also need to purchase individual entry tickets via the LAA Shop to gain access to the Rally and exhibition site.

What does the Pilot Coaching Scheme offer? Licence Revalidation & Renewals LAA Coaches can provide the “one hour with an Instructor ” flight at any time in the second year of your licence revalidation period, and then sign the revalidation if you have already flown the required hours. They all hold UK 'R' examiner privileges, so can also revalidate ratings on UK PPLs and NPPLs once all the requirements have been completed, even if they have not flown with you. All Coaches are allowed to do Renewal Training under the LAA DTO to assist pilots to prepare for their General Skills Test to get their lapsed licence back. Differences Training "Differences Training" requires the acquisition of additional knowledge and training on any appropriate device, or on an aircraft. It requires both ground and flight training and must be endorsed as having been completed by a suitably qualified Flight Instructor or Class Rating Instructor. Features which, when first experienced, require differences training are: Turbo-charged or Super-charged engines Variable pitch and constant speed propellers Tail wheel undercarriage Retractable undercarriage Cabin Pressurisation EFIS Single power lever control (SPLC) Microlights Additionally, for the UK National Private Pilot's Licence (NPPL) SSEA class rating, differences training is required for aircraft with a cruise speed in excess of 140 knots indicated airspeed. Familiarisation Training Before flying any type or variant of aircraft which you’ve not flown before, within the Single-Engine Piston (SEP) class, you must complete "Familiarisation Training". This is the correct modern terminology for what would previously be described as being "Checked Out" on a new type. "Familiarisation Training" requires the acquisition of additional knowledge by one of the following means: Self-study of appropriate material about the aircraft such as the Pilot Operating Handbook, Pilot’s notes, etc Training with a suitably qualified instructor A verbal brief from a pilot already familiar with the type , particularly in the case of a single seat aircraft, With multi seat aircraft, while it may be helpful to fly with another pilot already familiar with the type, pilots should note that only qualified instructors are authorised to provide training, including familiarisation training and this could lead to difficulties if an accident were to occur that was supervised by any pilot other than a qualified instructor. In addition, when first transitioning to flying types or variants of aircraft which include various specific more demanding or unusual features, that he or she has not previously experienced as pilot in command, a pilot must also have differences training with a qualified instructor to teach them to safely deal with the feature or features concerned. Whilst differences training with an instructor is mandatory, we also recommend you include ground and flight training with an instructor as part of your familiarisation training. Type Conversion If you're thinking of buying an aircraft, where do you go for a type conversion? The PCS has coaches who are experienced on a variety of modern and vintage types. Your coach will take you through your conversion until you are competent on type. Licence Migration The PCS can assist you to upgrade your licence to a different type and also add additional ratings e.g. NPPL(M) to NPPL(SSEA) etc. Miscellaneous Although we do offer specific courses, our coaches are available to fly with you for any flying training you may need in your aircraft. This can include revision of, for example: Practice Forced Landings; Circuits; Stalling; Navigation; R/T and more. Whilst we do not, at present, offer ab initio training, a number of our coaches are also fully qualified Flying Instructors and so may be able to assist with any training issues you may have.

Popular Flying Magazine 1957 Click on the links below to open each issue of Light Aviation Magazine from 1957 Jan 1955 PFA Bulletin March 1957 May/June 1957 July/August 1957 October/November 1957 December 1957 April 1957 September 1957

Preliminary Design Preliminary Design is the stage where the design is sized and developed in outline, leading to a three view drawing, performance and weight predictions. To help with this, LAA has developed a number of spreadsheets. Spreadsheet 1 is used to develop the basic geometry of the proposed aircraft, size the wing, fuselage and tail surfaces and work out some of the key parameters used later. Spreadsheet 2 is used to estimate the performance of the aircraft based on the geometry, initial weight estimates, engine power and guestimates of the drag coefficient and prop efficiency, allowing you to see how the performance is affected by changing each parameter in turn. Spreadsheet 3 is used to work out the critical structural speeds, develop the flight envelope and predict the aerodynamic loads on the main surfaces which can be used to size the structure, and as the basis for a load test program. The weight and balance spreadsheet elsewhere on our website allows the designer to quickly evaluate the implications on weight and cg of different positions for the crew, fuel tanks and baggage bay, and work out what empty aircraft weight and cg he must aim for. Thanks to the simplicity of these programs it takes only minutes to study the implications of changing the aircraft’s specification, for example the effect of changing the wing aspect-ratio, the trade-off between extra weight and cleaning up the airframe drag, extra power etc. Downloadable Spreadsheets Worked Spreadsheet Examples Design Tutorials