Aircraft parts included in this class, and including radiator type oil coolant-regulators used as accessoris to aircraft and automotive engines for regulating the temperature and ensuring the flow of lubricating oil therein; radiator type heat exchange units for use in super-charged air lines for regulating the temperature of such air preparatory to its use in carburettors of engines for aircraft and automotive vehicles; multiple cowl flap positioning systems; linear jacks; flexible shafts; jack and L drives; T transmission drives; L transmission drives, air compressors; hydraulic planetary transmissions, disconnect drive shafts; compressor and transmission assemblies; and air valves (flow selector, flow control and dump). Power plants and auxiliary power units including turbine compressor units, gas turbine power units, gas turbines motors, air turbines starters, air turbine motors And components for power plants controls and starting systems; mechanical jacks, jack assemblies, indicator covers, flexible shafts and couplings, and transmission drives Electrical power units, electrical motors, electrical generators, magnetic valves, electro-hydraulic power supplies; positioning jacks; all being machinery of parts of machinery included in this class

Heating equipment, including radiator type-heat exchange units for heating the air in cabins of aircraft by exchange of heat from engine exhaust gases; components for refrigeration units comprising, compressors, transmissions; turbine and compressor assemblies, drive shafts; heating sections and power sections; cooling turbines; all being goods included in this class