UK CAA 145 & EASA 145 approval C-Ratings:

C1 Air Conditioning and Pressure

C2 Auto Flight

C3 Comms and Nav

C4 Door – Hatches

C5 Electrical Power & Lights

C6 Equipment

C7 Engine – APU

C8 Flight Controls

C9 Fuel

C12 Hydraulic Power

C13 Indicating / Recording Systems

C14 Landing Gear

C15 Oxygen

C17 Pneumatic & Vacuum

C18 Protection Ice/Rain/Fire

C19 Windows

C20 Structural

ACS Aviation Industries Ltd is an UK CAA 145, EASA 145, FAA 145, and PART 21G Repair Station.