BMAA Technical Office Documents for aircraft owners and inspectorsThe BMAA Technical Office is able to provide members with information and assistance for the modification of a BMAA aircraft. The section below will guide you through the information sources.
All two seat Microlight aircraft are subject to airworthiness regulations which ensure that each design is approved as airworthy. Each of these aircraft is awarded a Permit to Fly by the UK Civil Aviation Authority. The Permit is validated each year by having an inspection and check flight. The inspection is carried out by an Inspector authorised by the BMAA. The owner may carry out their own check flight.
If an owner wishes to modify the design of his aircraft, this might be by adding a fuel tank, changing the suspension or simply installing a radio, the regulations require that the modification is approved to ensure that I does not compromise the airworthiness of the design. The BMAA Technical Office is able to make the assessment of a modification for BMAA members.
Details of the classifications of modifications is explained in more detail in our Technical Information Leaflet Til 002. You can download a copy here. Til 002
The process for approval starts with an initial assessment of the modification as major or minor. For an assessment download and complete a Form AW 002 in Word or .pdf format and send it in to the BMAA technical office.
Some minor modifications are very common, such as fitting a radio to your aircraft. To make these simple to approve and reduce the cost of approval the BMAA has developed a series of Standard Minor Modifications (SMM). We have listed the SMMs below.
SMM 101 Issue 5 Flexwing Microlight Radio / Intercom
SMM 102 Issue 5 3-axis Microlight Radio / Intercom
SMM 103 Issue 3 Trike Panniers
SMM 104 Issue 7 Fitting a Transponder Updated
SMM 105 Issue 3 Flexwing Passenger Upper Torso Restraint
SMM 106 Issue 4 Simple Flexwing Strobe Installation Updated
SMM 107 Issue 5 Auxilliary Power Socket Installations
SMM 108 Issue 3 Carburettor Heaters
SMM 109 Issue 4 GPS Installation
SMM 109a Issue 3 "Aware" GPS Installation
SMM 110 Issue 3 Simple Landing Light Installation
SMM 111 Issue 2 "Conair Soft Start Module" Installation
SMM 112 Issue 2 "Conair Thermostasis Oil Bypass Valve"
SMM 116 Issue 1 Fuel Pressure Gauge
SMM 117 Issue 2 LiFeP04 Battery Direct Replacement
SMM 118 Issue 1 ADS-B Out
SMM 119 Issue 1 Declaration of change of radio
SMM 120 Issue 1a Fitting a tracker device