e.  
‘Maximum Recommended Cruising Power Conditions’ means the crankshaft rotational speed, engine manifold pressure and any other parameters recommended in the engine manuals as appropriate for cruising operation.

f.  
‘Maximum Best Economy Cruising Power Conditions’ means the crankshaft rotational speed, engine manifold pressure and any other parameters recommended in the engine manuals as  appropriate for use with economical-cruising mixture strength.  

‘Pitch Setting’ means the propeller blade setting determined by the blade angle, measured in a manner and at a radius declared by the manufacturer and specified in the appropriate Engine Manual.
‘Powered sailplane’ means an aircraft, equipped with one or more engines having, with engine(s) inoperative, the characteristics of a sailplane.
‘Propeller’ means a complete propeller including all parts attached to and rotating with the hub and blades, and all equipment required for the control and operation of the propeller.  
‘Propeller Equipment’ means all equipment used with, or necessary for the control and operation of the propeller.
‘Protective breathing equipment’ means breathing equipment for protection against smoke, fumes and other harmful gases.
‘Prototype Engine’ means the first engine, of a type and arrangement not previously approved, to be submitted for type-approval test.
‘Prototype Propeller’ means the first propeller of a type and arrangement not previously approved, to be submitted for type-approval tests.
‘Reference landing speed’ means the speed of the aeroplane, in a specified landing configuration, at the point where it descends through the landing screen height in the determination of the landing distance for manual landings. 
‘Reverse Pitch’ means the blade angle used for producing reverse thrust with a propeller.