Light Aviation Magazine 2013 Click on the links below to open each issue of Light Aviation Magazine from 2013 January 2013 April 2013 July 2013 October 2013 February 2013 May 2013 August 2013 November 2013 March 2013 June 2013 September 2013 December 2013

Light Aviation Magazine Archive 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2022 2020 2021 2023 2024 2019

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.

< Back Mandatory Technical Directive issued for Eurofox aircraft 6 Dec 2024 Inspection of Trim Tab Operating Cable Attachment to Prevent In-Flight Failures and replacement with Improved Design of Cable Attachment In 2016, the LAA issued an Alert, LAA/AWA/16/08 , regarding reported problems with the thin stranded steel elevator trim cable on Eurofox aircraft fraying at the attachment point to the trim tab operating horn, where the design forced the cable to be bent around the sharp edges of the clevis. The 2016 Alert also provided a link to, and served to promulgate, the Eurofox UK Service Bulletin on the subject, SB 04/2016 . Recently we’ve been advised of a potentially serious incident of elevator flutter on a Eurofox while towing a glider, which was caused by the trim cable failing altogether in flight where it passes around the trim tab operating horn clevis. This resulted in violent shaking of the elevator with serious potential for structural damage or loss of control. Since the cable had evidently frayed considerably before failing altogether, this occurrence highlights the importance inspecting the trim cable for signs of fraying at this point at each pre-flight and maintenance check, and, as the service bulletin explains, of keeping the clevis free-moving about its attachment to the tab so the clevis remains in line with the cable as the tab moves. This minimises the relative movement between the two which if occurring, would accelerate the wear on the cable. Eurofox UK advises that since the issue of the 2016 Service Bulletin, they have revised the design of the cable attachment clevis so that the cable now passes around a circular bush rather than being forced into two sharp bends, which reduces the wear on the cable and tendency to fray and eventually break. MTD-07-2024 , issued today, requires Owners/Operators to check whether the old or new design of clevises are fitted and for any signs of trim cable fraying before further flight. Owners/Operators must obtain and use a copy of the up-issued AEROPRO Checklist - B Service/Maintenance plan (Update Nov 2024 LAA aircraft) before the next 50-hour check. Finally, the trim cable system must be replaced immediately if any trim cable fraying is found, as detailed in the MTD. Furthermore, all Eurofoxes with the old-style of clevis must have the trim cable system replaced, as described in the MTD, by 1st June 2025. MTD-07-2024 Eurofox Trim Cable .pdf Download PDF • 495KB Next Previous

< Back LAA Alert for Rotax 900 series engines regarding the oil spray nozzle 18 Dec 2024 Inspection and/or Replacement of Oil Spray Nozzle On 16.12.24, Rotax issued a new MANDATORY Service Bulletin SB 912 i-016/SB 915 i-016 / SB 916 i-006 which calls for urgent action for engines of specified models within certain serial number ranges, if the engine has run for less than 200 hours from new, or engines which have been fitted with specific overhaul kits supplied between 01.01.22 and 31.10.24 inclusive. The bulletin concerns problems with a possible full or partial blockage of the oil spray nozzle due to an excessive application of Loctite at the manufacturing stage, when assembling the sprag clutch housing. This can lead to inadequate cooling of the stator assembly, potentially causing loss of electrical power to the engine’s ECU. A-05-2024 Rotax Engine Oil Spray Nozzle .pdf Download PDF • 205KB Next Previous

< Back Engineering updates in December 2 Jan 2025 The following documents have been issued/updated in the Engineering 'Info Library' during December. Continuing airworthiness information: Mandatory Technical Directive 07-2024 - Eurofox trim cables Alert 03-2024 - Eurostar trim cables Alert 04-2024 - Loose Rotax engines Alert 05-2024 - Rotax 900 series engines - blocked oil spray nozzle Technical Leaflets: TL 2.22 'non-type specific MPDs' TADS : Sling 4 TSi Wishing all our members a very Happy New Year. Next Previous

< Back Alert A-10-2025 - Cracking in E-Props Carbon Propeller Hubs 28 Aug 2025 LAA Alert A-10-2025 - Cracking in E-Props Carbon Propeller Hubs A recent report of a crack appearing on an E-Props carbon composite propeller hub was received by the British Microlight Aircraft Association (BMAA). The crack was in the flange forming the periphery of the circular hub, in the close vicinity of one of the bolts in the outer ring of blade clamping bolts. Alert A-10-2025 shows photographs of the crack discovered and details required actions if cracks are found on LAA aircraft. A-10-2025 is available HERE and shown below. A_10_2025_E_Props_Propeller_Hub_Cracking_Issue_1 .pdf Download PDF • 382KB Next Previous

< Back Replica De Havilland DH71 Tiger Moth Racer takes to the air 23 Dec 2024 Steve Jones’ replica DH71 Tiger Moth Racer made a highly successful maiden flight on 26th November, piloted by Steve himself. The immaculate monoplane, appropriately registered G-ECDX, is a full-size recreation of one of only two examples built by de Havilland in 1927. Of all wood construction, and fitted with a modified DH Gipsy 1 engine, the original DH71s were created to publicise their new Gipsy engine before releasing it onto the market to power their already successful DH60 Moth biplane. An exercise in light weight and streamlining to maximise speed, the DH71 was also significant in developing construction techniques that de Havilland used to good effect in later designs. The original DH71 achieved 186mph around a 65 mile closed circuit course, its Gipsy 1 engine souped-up from 85 to 130 horsepower for racing. The replica project was largely built by Ron Souch in the 1990s, under PFA supervision, using drawings produced by Ron’s friend Ben Price, a former aircraft draughtsman who put forward the idea as his retirement project. None of the original construction drawings had survived, so the design had to be recreated based on a three-view, photographs, press articles and intimate knowledge of de Havilland’s standard design techniques – and then checked against modern design code requirements. Most challenging part of the design were the details of the internally bungee-sprung wheels, as on the original. The project was paused for several years after issues came to light with the stressing of the wing spars and undercarriage. Steve Jones, looking for a hangar-mate for his scratch-built Comper Swift project, purchased the DH71 in 2016. Steve quickly got things moving again by commissioning re-designs of some of the original components, stripping off the fabric covering, re-sparring the wings and finishing the aircraft off to the same high standard as its original construction. The final examination of the assembled aircraft by LAA HQ’s design staff in November, when ground runs of the modified engine and its very coarse pitch Hercules propeller were demonstrated, took place over three decades after the project’s inception. When Steve’s replica DH71 first lifted off from Sywell’s grass runway, it was a sight not seen in Britain for 95 years. Big congratulations to all involved, especially to Ron and Ben for initiating it, and Steve’s perseverance and skill in finishing all the last details to such a high standard. Honourable mentions also to John Tempest for the re-design work and Ben Cox for inspecting it, this was truly a team effort. Sadly, Ron Souch is no longer with us to see the Racer fly. Steve describes his aircraft experience as starting as an aircraft engineering apprentice at CSE Kidlington, in the late 1970s. He towed gliders at Husbands Bosworth, in Chipmunks, at age 19, and joined the Tiger Club in the late 1970s, becoming a flying instructor at Staverton 1981. As he describes it, he somehow (?) ended up flying BA 747s for 20 plus years. His remarkable flying career has involved air racing, aerobatic competition and display flying, Redbull competitions and record setting in the Rolls Royce electric powered ‘Spirit of Innovation’ aircraft. Next Previous

< Back Engineering updates in October 11 Nov 2025 The following documents have been issued/updated in the Engineering 'Info Library' during October. Continuing airworthiness information : Alert A-11-2025 - Eurostar control system rose joints Alert A-12-2025 - Aeroprakt windscreens TADS: Evektor Eurostar Vans RV-9/-9A Propeller type lists PTL/1 : Murphy Renegade 912 (new) Murphy Renegade Spirit (new) Vans RV-6 (up-issued) Next Previous

< Back LAA Head Office closed on Friday 4th July 3 Jul 2025 LAA HQ will be closed on Friday 4th July 2025 due to the Silverstone Grand Prix. All staff will be working from home, so can continue to deal with your calls and emails, but will not be on site at Turweston to answer any questions directly or receive any hand-delivered documents. Next Previous

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 Winner Announced: LAA 80th Anniversary Rally Poster 6 Mar 2026 The winner of the 80th Anniversary Rally Poster Competition has been selected, and we’re delighted to reveal the official design that will represent this milestone year for the Light Aircraft Association. Congratulations to Amy Whitewick, whose striking design was chosen to mark 80 years of grassroots aviation, engineering excellence and community spirit! A Design That Captures 80 Years... The judging panel selected the artwork for its strong visual impact, clear celebration of the LAA, and its versatility across print and digital formats. The design reflects both the history of the Association and the forward-looking spirit that continues to define it today. Speaking about the win, Amy Whitewick said: "I'm so excited to win the LAA Rally Poster Competition for the 80th Anniversary, 2026 - my vision for the design was to create something that reflected the colours and styles that I love from posters of the 1930s, the Golden Age of aviation. I also wanted the poster to reflect the excitement and joy of current light aviation, including the portrayal of various aircraft types throughout the 80 years and embody the party-like spirit of this year's special rally. I felt this poster gives back all the joy and kindness that fellow LAA Members, Inspectors and Engineers have given me over the years. It's really a big thank you to them, my airfield 'family', who helped me achieve my wings and continue to encourage me to grow my skills."- Amy Whitewick, G-DHYS From Poster to Rally Branding The winning artwork will now be rolled out to support the promotion of the 2026 Rally! You’ll start seeing the design appear across LAA channels in the coming weeks as we build momentum towards the Rally. Thank You to All Entrants We’d like to thank everyone who submitted entries. The quality and creativity on display made judging a difficult task and demonstrated the depth of talent within the LAA community. We look forward to seeing the winning poster proudly displayed at the 80th Anniversary Rally.Rally details and ticket information will be shared with you in the coming months. LAA 80 Poster 2026 A4 .jpg Download JPG • 1.83MB Amy Whitewick - Photo .jpg Download JPG • 350KB Next Previous