EASA C1 Air Cond and Press
EASA C3 Comms and Nav
EASA C4 Doors – Hatches
EASA C5 Electrical Power and Lights
EASA C6 Equipment
EASA C7 Engine – APU
EASA C8 Flight Controls
EASA C9 Fuel
EASA C12 Hydraulic Power
EASA C13 Indicating/Recording Systems
EASA C14 Landing Gear
EASA C17 Pneumatic & Vacuum
EASA C18 Protection ice/rain/fire
FAA Accessory
FAA Instrument
FAA Radio
FAA Airframe
FAA Landing Gear
DOT Cylinder Requalifier