Over 25kg Scheme

If you plan to build and fly a model aircraft in the UK of any type which weighs over 25kg MTOM then it is mandatory (a requirement of the Civil Aviation Authority) that the aircraft is built, inspected and flight proven using the over 25kg scheme operated by the Large Model Association on behalf of the CAA.

The top level summary of the scheme is-

  • Aircraft inspected during design & build by an LMA inspector
  • Aircraft carries out flight test programme witnessed by an LMA witness
  • CAA issue annual authorisation to fly for named pilots
  • Aircraft inspected if it is modified or repaired by an LMA inspector


The Scheme overall requirements document can be downloaded Here


The fixed wing flight test log can be downloaded Here

The Following Locations are approved for flight testing of over 25kg model aircraft in accordance with section 4.8 (8) of Model Aircraft Article 16 Authorisation UAS13534

NLMFC Baldock
RNAS Culdrose
RNAS Merryfield
Weston Zoyland
Salisbury MFC
Langar Model Aircraft Club
Binham Model Flying Site
Cheddar Model Flying Site
RAF Barkston Heath
Peonix MFC
Elvington Airfield
LMA North West Model Flying Site
LMA Lighthorne
RAF Shawbury
NMAS Longhorsley
Wimborne MAC Cashmoor
Winterton MFC
Tibenham Airfield

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