[Ref. Pilot’s Handbook of Aeronautical Knowledge, FAA-H-8083-25B Page 7-1]
The primary systems on most GA aircraft include but not limited to:
- Engine (engine itself + 6 sub-systems)
- Airframe System
- Flight Control System
Note : Flight Control system is added by myself, but I think that is making sense ?!
Additonal systems that might be installed as well as play essential roles in modern airliner: