< 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 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 Mandatory Technical Directive issued for Supermarine Spitfire mk26 and mk26a 16 Feb 2024 It has been found that there is potential for the fin of the Supermarine Spitfire Mk26 and 26B to be misaligned during build, due to a build-up of tolerances in the fin and its attachment, possibly leading to a mis-rigging of the rudder and failure to achieve the desired range of rudder travel. This could possibly result in degraded controllability in flight and on take-off and landing. In the interests of safety MTD 01-2024 calls for mandatory checks to be made on the fin alignment and rudder range of movement. Next Previous

Operating & Maintaining Aircraft This section is intended to cover everything that happens once the aircraft is in a flying state. From a technical point of view, the most import of these is keeping on top of the aircraft’s maintenance. This is critical in enabling an owner to meet his or her obligation to maintain the aircraft in an airworthy condition. AIRCRAFT MAINTENANCE TOTAL AVGAS UL91 ETHANOL-FREE MOGAS WEIGHT & BALANCE E5 MOGAS REVALIDATING A PERMIT TO FLY 97 OCTANE SUPER-UNLEADED E10 MOGAS - NOT APPROVED

The Annual General Meeting of the Light Aircraft Association Ltd Old Warden Aerodrome Airfield of The Shuttleworth Collection Bedfordshire 20th October 2024 N otice is given that the AGM of the Light Aircraft Association (LAA) will be held in the Discovery Hub, Old Warden Aerodrome, Biggleswade, SG18 9EP at 12Hrs on Sunday 20th October 2024. Nominations for Board Directors and Notices of Motions of any kind for the AGM must be received at LAA HQ, no later than Sunday 8th September 2024. Nominations must be signed by both proposer and seconder, both of whom must be beneficial shareholders. In respect of nominations to the Board of Directors, candidates must have been a beneficial shareholder continuously for at least two years and include a signed statement indicating their willingness to serve as a Director, should they be elected. The AGM will provide for both in person and remote on-line participation. These arrangements will be professionally administered. In addition, those unable to attend may elect to submit proxy votes. A full list of nominations, Motions together with the proxy voting form will be published with October’s Light Aviation and on-line via the LAA website. The AGM will be pre-ceded by the presentation of LAA Service, Rally Trophies and Awards to members. Following the AGM there will be time reserved for a Member’s Forum for discussion and Q&A on general matters with the Board and CEO. Light refreshments will be available upon arrival and lunch will be available to purchase in the Shuttleworth cafe. Provision will also be made for members to fly-in and visit the Shuttleworth museum and gardens – full details of which will be published in due course. If you have any questions or comments for the AGM or the Member’s Forum please get in touch with us via [email protected]

Total Avgas UL91 Total’s unleaded avgas UL91 (see article in LA August 2011) is now available at many UK airfields. The fuel has been promoted as being particularly appropriate for Rotax engines, but it is suitable, and approved, for a wide range of engines types used in LAA aircraft. The LAA Airworthiness Approval Note (AAN) for use of UL91 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 this fuel in non LAA types is available here.

Light Aviation Magazine 2017 Click on the links below to open each issue of Light Aviation Magazine from 2017 January 2017 April 2017 July 2017 October 2017 February 2017 May 2017 August 2017 November 2017 March 2017 June 2017 September 2017 December 2017

< Back uAVionix AV30E approved as a back-up EFIS 8 Jun 2023 We've recently added the uAvionix AV30E to our list of approved backup EFIS units for use in Permit aircraft. The EFIS units listed in TL3.20 may be used without further reference to LAA Engineering, although your LAA inspector will need to make a Permit Maintenance Release (PMR) entry in the airframe logbook quoting this Technical Leaflet reference. Next Previous

LAA Type Clubs British Rotorcraft Association W: www.britishrotorcraftassociation.org T: 07841870568 E: [email protected] Pietenpol Club W: www.pietenpolclub.uk E: [email protected] The Aeronca Club of Great Britain W: www.aeronca.co.uk T: 01752 406 660 E: [email protected] The Europa Club W: www.theeuropaclub.org E: [email protected] Vintage Aircraft Club W: www.vintageaircraftclub.org.uk E: [email protected] Vintage Piper Aircraft Club W: www.vintagepiper.co.uk E: [email protected] International Auster Club W: www.austerclub.org British Women Pilots' Association W: www.bwpa.co.uk E: [email protected] Beagle Pup & Bulldog Club W: www.bpbc.uk T: 07985 430265 E: [email protected]

< Back Grass Roots Fly-In Slots and Tickets now available! 26 Jul 2023 Not long to go now!! Details on slot bookings, entrance tickets, camping, exhibitor information, trophies and awards, opening times, other attractions etc are now available Fly-in details can be found here . Next Previous

Working with Aluminium - Basic Course Price Member - £255, Non-Member - £275 (includes toolbox) Duration Arrival 09:00. Finish 17:00. < Back About the Course The 'Working in Aluminium' courses have proved immensely popular, as so many of the popular kits today use this medium. Our tutors will guide you through the construction of a Van’s toolbox. The build process is specifically designed to teach you drilling, de-burring, dimpling and riveting by various methods, and by the end of the day you will have a useful ‘apprentice piece’ to take home with you. The course syllabus will include: measuring and marking, cutting and drilling, deburring, fluting and straightening, countersinking and dimpling, and, the bit you’ve been waiting for, riveting; in fact, all you need to know to get you started on your aluminium aircraft project. These subjects will be covered by description, demonstration, and practice as you construct a Van’s toolbox kit. We will also discuss workshop practice and safety, the technical rationale behind many common build techniques, such as de-burring and priming, and provide guidance on further tools and techniques required. Aluminium is a clean material and no special clothes are required, nor will be provided. Overalls, lab coats, etc. are not necessary, but by all means bring them if you wish. Some safety equipment is necessary, however. Please bring suitable eye protection (glasses, goggles), ear protection (muffs, plugs), and hand protection (gloves). All the tools required to assemble the box will be provided by the LAA, but if you have your own air drill (PCL air connection) or pneumatic rivet gun then please feel free to bring them along (suitably identified). Your Instructor Gary Smith Dates New date tbc Times Arrival 09:00. Finish 17:00. Duration One day course Venue LAA HQ, Turweston Aerodrome, NN13 5YD Price Member - £255, Non-Member - £275 (includes toolbox) 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 2023 Click on the links below to open each issue of Light Aviation Magazine from 2023 January 2023 April 2023 July 2023 October 2023 February 2023 May 2023 August 2023 November 2023 March 2023 June 2023 September 2023 December 2023