Continuing Airworthiness Information One of the key strengths of the LAA's system is that we can monitor the fleet centrally and keep track of airworthiness incidents from around the world. Where necessary, we can then let our owners know, to help them keep flying safely. A full listing of Airworthiness Alerts, Technical Service Bulletins and Mandatory Technical Directives can be found below: ALERTS, TECHNICAL SERVICE BULLETINS & MANDATORY TECHNICAL DIRECTIVES

< Back LAA Alert for some models of Rotax Engines 1 Mar 2025 LAA Alert A-02-2025 has been published on the LAA website (and is also attached), highlighting a recent service bulletin published by Rotax regarding the inspection and/or replacement of the crankcase and/or gearbox housing on affected engines. Rotax has identified a potential manufacturing issue affecting the hardness values of the crankcase and/or gearbox housing materials in certain engines. These components may not meet the required specifications for material hardness, which could lead to reduced component durability and/or potential oil leakage. Rotax regards this bulletin as mandatory. A-02-2025 - Rotax Crankcase .pdf Download PDF • 220KB Next Previous

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

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

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

< Back MTD-05-2025 Issue 3 published - Eurofox Rudder Pedals 7 Jan 2026 MTD-05-2025 Issue 3 has been published to provide further information on the situation as it develops and asking Owners and Inspectors to report back. The inspection schedule in unchanged from Issue 1 or Issue 2. Therefore, Issue 3 does not require you or your Inspector to do anything different. If your aircraft has already been inspected to MTD-05-2025 Issue 1 or Issue 2, then the next time an inspection in accordance with the MTD is due, you Inspector should reference Issue 3 in their logbook entry. LAA is continuing to work towards achieving a permanent solution via a modification to the rudder pedal/torque tube design. MTD-05-2025 Issue 3 is attached below and can be found on the website HERE . 20260107 - MTD-05-2025 Issue 3 - Eurofox Rudder Pedal Cracking .pdf Download PDF • 883KB Next Previous

< Back The online Permit Revalidation System is live for Gyroplanes! 22 Jul 2025 We are pleased to announce that the online Permit to Fly revalidation system went live today for gyroplanes, both home-built and factory-built! Step-by-Step Video Guide, FAQs and Crib Sheet The step-by-step guide to the new online Permit Revalidation system in the form of an ‘ Online Permit Revalidation Explained ’ video can be found below. This was written for a fixed-wing example, but the majority of questions are the same for gyroplanes and the process for gyroplanes has the same three stages as for any fixed-wing aircraft. We have also compiled a list of ‘ Frequently Asked Questions ’ for you, which are found below. The ' Crib Sheet ' for Inspectors referenced in the video is formally called the ' Airworthiness Review Reference Guide ' and is available HERE . There is a version of the crib sheet for homebuilt gyroplanes, entitled ARR-REF (HOMEBUILT GYROPLANE) and a version for factory-built gyroplanes, entitled ARR-REF (FB GYROPLANE). The Check Flight Schedules for both homebuilt and factory-built gyroplanes have now been combined into a single check flight schedule for gyroplanes, entitled CFS-1 (GYRO). This is available HERE . Previous check flight forms for homebuilt and factory-built gyroplanes are now obsolete. The Permit Flight Release Certificate (PFRC) is now a separate document, where it was previously contained within the application form for revalidating a Permit to Fly. It can be found HERE . Key Considerations There are a few key considerations to ensure a Permit to Fly revalidation under the new system goes smoothly: Please make sure you know your username and password for the LAA website. If you have forgotten your login details, please contact the LAA Office. All aircraft using the new system for the first time will require a check flight no older than 3 months at the time of submission of the revalidation application. This is in order to provide a baseline for the online system. The 3-year check flight cycle will then apply subsequently to most aircraft types. Some aircraft will still require a check flight at every revalidation, these are: Aircraft cleared for Night/IFR. Aircraft which have flown less than 12 hours since the previous revalidation inspection. Aircraft Owners will not have to submit a CFS-1 (GYRO) Check Flight Schedule when applying through the new system. However, a CFS-1 (GYRO) will need to be completed for each check flight and stored with the aircraft’s documentation, so that it is available when needed. We will no longer be accepting old-style (paper or scanned) Airworthiness Reviews for homebuilt or factory-built gyroplanes conducted on or after 22 nd July 2025. Need Help? The ‘Revalidating a Permit to Fly’ page on the LAA website signposts you to all the information you will need and can be found HERE . If you have any problems or questions, please follow the steps below: Watch the ‘ Online Permit Revalidation Explained ’ video found HERE . Read Technical Leaflet 2.00 - 'Revalidating your Aircraft's Permit to Fly,' which has now been updated to include information for gyroplanes. Look at the gyroplane variants of the 'crib sheet' for LAA Inspectors, entitled ' Airworthiness Review Reference Guide ,' which is available HERE . Look at our list of FAQs ,. If steps 1-4 do not help you find the answer, contact LAA Engineering on [email protected] or call (0)1280 846786 20250721 - Permit Revalidation Process FAQs Issue 2 .pdf Download PDF • 198KB Next Previous

< Back MTD-04-2025 upissued to Issue 2 - Rans Control Linkage Rod End Connector Safety Washers 18 Nov 2025 MTD-04-2025 Issue 2 - Rans Control Linkage Rod End Connector Safety Washers MTD-04-2025 Issue 1 was recently published to mandate the replacement of all plastic control linkage rod end connector washers with metal washers . It has become apparent that the washers specified in this MTD are not suitable to replace the plastic washers due to their dimensions. MTD-04-2025 Issue 2 has been raised in order to amend the specification of the metal washers that must used to replace plastic washers. Therefore, MTD-04-2025 Issue 2 supersedes Issue 1. Issue 1 of this MTD is 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 2 .pdf Download PDF • 293KB Next Previous

< Back Alert A-04-2025 - Jabiru Flywheel Bolts 12 Jun 2025 LAA Alert A-04-2025 - Jabiru Flywheel Bolts LAA Alert A-04-2025 has been published on the LAA website (and is also attached), highlighting the Installation Procedure, Torque Checks and Replacement Interval for Flywheel Attachment Bolts on aircraft equipped with Jabiru 2200, 3300 and 5100 engines, and withdrawal of LAA Alert AWA/20/15. With the advice in JSB-012 (Issue 9 onward) having been promulgated by Jabiru, LAA has withdrawn Alert AWA/20/15, which means that provided the advice in JSB-012 Issue 9 or subsequent is followed, along with regular bolt torque checks at every 100 hours and annual check as called for in the Engine Maintenance Manual, the recommended bolt life is as stated in the Engine Maintenance Manual (currently 500 hrs). For LAA aircraft having the flywheel bolts replaced, or torque checked, the work must be overseen and signed-for by a suitably approved LAA Inspector. Engine logbook entries must be made and certified with a PMR statement referencing JSB-012 in the logbook white pages, as well as an entry in the logbook pink pages (or equivalent method for tracking continued airworthiness compliance). A-04-2025 - Jabiru Flywheel Bolts .pdf Download PDF • 202KB 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 Mandatory Technical Directive issued for Jabiru 2200 engines 10 Jul 2024 Mandatory Technical Directive, MTD-05-2024 has been issued today to introduce mandatory checks on the clearance between the distributor cap and rotor arm in Jabiru 2200 engines where the cap or rotor have recently been changed (or following subsequent changes). This follows an in-service finding where differences in distributor cap design were found which lead to extreme wear in the components causing the engine to stop. The MTD must be carried out before further running of the engine on or after 10th July 2024 on Jabiru 2200 engines where the distributor cap and/or rotor arm has been changed in the last 20 engine hours, or are subsequently changed. The checks are also recommended on all other Jabiru 2200 engines. Next Previous