In these Regulations, unless the context otherwise requires -
"ampere (A)"
means that constant electric current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in a vacuum, would produce between the parallel conductors a force equal to 2 x 10-7 newton per metre of length;
"candela (cd)"
means the luminous intensity, in the perpendicular direction, of a surface of 1/600 000 square metre of black body at the temperature of freezing platinum under a pressure of 101 325 newtons per square metre;
"celsius temperature (t°C)"
means the Celsius temperature is equal to the difference t°C = T-T0 between two thermodynamic temperatures T and TO where TO equals 273.15 Kelvin;
"coulomb (C)"
means the quantity of electricity transported in 1 second by a current of 1 ampere;
"degree Celsius (°C)"
means the special name for the unit Kelvin for use in stating values of Celsius temperature;
"farad (F)"
means the capacitance of a capacitor between the plates of which there appears a difference of potential of 1] volt when it is charged by a quantity of electricity equal to 1 coulomb;
"foot (ft)"
means the length equal to 0.304 8 metre exactly;
"General conference of Weights and Measures (CGPM)"
means the primary intergovernmental treaty organization responsible for the SI and ensuring that the SI is widely disseminated and modifving it as necessary so that it reflects the latest advances in science and technology;
"Gray (Gy)"
means the energy imparted by ionizing radiation to a mass of matter corresponding to 1 joule per kilogram;
"Henry (H)"
means the inductance of a closed circuit in which an electromotive force of 1 volt is produced when the electric current in the circuit varies uniformly at a rate of 1 ampere per second;
"Hertz (Hz)"
means the frequency of a periodic phenomenon of which the period is 1 second;
"human performance"
means human capabilities and limitations which have an impact on the safety and efficiency of aeronautical operations;
"International System of Units (SI)"
means a complete, coherent system which includes three classes of unit's base units, supplementary units and derived units;
"Joule (J)"
means the work done when the point of application of a force of 1 Newton is displaced a distance of 1 metre in the direction of the force;
"Kelvin (K)"
means a unit of thermodynamic temperature which is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water;
"kilogram (kg)"
means the unit of mass equal to the mass of the international prototype of the kilogram;
"Knot (kt)"
means the speed equal to 1 nautical mile per hour;
"litre (LY' means a unit of volume restricted to the measurement of liquids and gases which is equal to 1 cubic decimeter;
"Lumen (Im)"
means the luminous flux emitted in a solid angle of 1 steradian by a point source having a uniform intensity of 1 candela;
"Lux (Ix)"
means the illuminance produced by a luminous flux of 1 lumen uniformly distributed over a surface of ] square metre;
"metre (m)"
means the distance travelled by light in a vacuum during 1/299 792 458 of a second;
"Mole (mol)"
means the amount of substance ofa system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12;
"Nautical mile (NM)"
means the length equal to 1,852 metres exactly;
"Newton (N)"
means the force which when applied to a body having a mass of | kilogram gives it an acceleration of 1 metre per second squared;
"Ohm (Q)"
means the electric resistance between two points ofa conductor when a constant difference of potential of 1 volt, applied between these two points, produces in this conductor a current of 1 ampere, this conductor not being the source of any electromotive force;
"Pascal (Pa)"
means the pressure or stress of 1 newton per square metre;
"Radian (rad)"
means the plane angle between two radii of a circle which cut off on the circumference an arc equal in length to the radius;
"Second (s)"
means the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom;
"Siemens (S)"
means the electric conductance of a conductor in whicha current of 1 ampere is produced by an electric potential difference of 1 volt;
"Sievert (Sv)"
means the unit of radiation dose equivalent corresponding to 1 joule per kilogram;
"'Steradian (sr)"
means the solid angle which, having its vertex in the centre of a sphere, cuts off an area of the surface of the sphere equal to that of a square with sides of length equal to the radius of the sphere;
"Tesla (T)"
means the magnetic flux density given by a magnetic flux of 1 weber per square metre;
"Tonne (t)"
means the mass equal to 1 000 kilograms;
"Volt (V)"
means the unit of electric potential difference and electromotive force which is the difference of electric potential between two points of a conductor carrying a constant current of 1 ampere, when the power dissipated between these points is equal to 1 watt;
"Watt (W)"
means the power which gives rise to the production of energy at the rate of 1 joule per second;
""Weber (Wb)" means the magnetic flux which, linking a circuit of one turn, produces in it an electromotive force of 1 volt as it is reduced
to zero at a uniform rate in ] second.
PaRT I] - STANDARD APPLICATION OF
