For the purpose of certification, aircraft are divided into categories.
Distinctions are based largely upon aircraft design and size.
The design standards of different types of aeroplane and rotorcraft are listed on Type Certificate Data Sheets (TCDS).
The design standards for microlight aeroplanes and gyroplanes are listed on Type Approval Data Sheets (TADS).
The WebPages listed in the menu bar contain further information regarding the aircraft categories specified.
Explained are the certification requirements set for the operation of each type of aircraft.
Links to the relevant application forms and to guidance information have also been included.
Type Certificate and Type Approval Data Sheets