The certificate is intended for people who currently hold a National Certificate in a subfield other than aeronautical engineering, or equivalent, for example general engineering, or allied trades, and who are using the skills contained in that qualification in the aeronautical engineering industry. This qualification has strands in Aeronautical Non Destructive Testing, Armament, Avionic Electrical Repair, Avionic Instrument Repair, Avionic Maintenance, Avionic Radio Repair, Aircraft Mechanical, Aircraft Powerplant, Rotorcraft, and Aircraft Structures.