24-Electric
Power
26-Fire Protection
28-Fuel
37-Vacuum
54-Engine Mount
61-Propellor
71-Powerplant
72-Engine
73-Fuel &
Control
74-Ignition
74-10 Ignition
Control
74-11
Ignition Timing
74-20 High Tension
74-21 Coils
74-22 Spark plugs
74-22 Spark
plug life
74-23 Coil Weight
75-Air
76-Control
77-Indicating
78-Exhaust
79-Engine
Oil
80-Starting
83-Gearbox