European Aviation Safety Agency
 
 
Definitions and abbreviations used in Certification Specifications for products, parts and appliances
 
 
1. GENERAL DEFINITIONS
 
 
‘Aerodynamic coefficients’ means non-dimensional coefficients for aerodynamic forces and moments. 
 
‘Aeroplane’ means an engine-driven fixed-wing aircraft heavier than air, that is supported in flight by the dynamic reaction of the air against its wings.
 
‘Airborne’ means entirely supported by aerodynamic forces.
 
‘Aircraft’ means a machine that can derive support in the atmosphere from the reactions of the air other than the reactions of the air against the earth’s surface.
 
‘Aircraft-Supplied Data’ means all data which is supplied by or via aircraft systems and is used by the Engine/Propeller Control System.
[Amdt. No.:Def/1]
 
‘Aircraft-Supplied Electrical Power’ means any electrical power which is supplied by or via aircraft systems and is used by the Engine/Propeller Control System.
[Amdt. No.:Def/1]
 
‘Airframe’ means the fuselage, booms, nacelles, cowlings, fairings, aerofoil surfaces (including rotors but excluding propellers and rotating aerofoils of engines), and landing gear of an aircraft and their accessories and controls.
 
‘Alternate Mode’ (Engine related definition) means any Control Mode, including Back-up Modes that are not the Primary Mode used for controlling the Engine.
[Amdt. No.:Def/1]
 
‘Atmosphere, International Standard’ means the atmosphere defined in ICAO Document 7488/2. For the purposes of Certification Specifications the following is acceptable:
 
a. The air is a perfect dry gas;
 
b The temperature at sea-level is 15°C;