CIVIL AVIATION: SUBSIDIARY LEGISLATION: CIVIL AVIATION (UNITS OF MEASUREMENT TO BE USED IN AIR AND GROUND OPERATIONS) REGULATIONS

(section 89(1))

(6th June, 2022)

ARRANGEMENT OF REGULATIONS

    REGULATION

PART I
Preliminary

    1.    Citation

    2.    Interpretation

    3.    Application

PART II
Standard Application of Units of Measurement

    4.    SI Units

    5.    Non-SI units

    6.    Application of specific units

    7.    Design, procedures and training

PART III
Termination of Use of Non-SI Alternative Units

    8.    Termination of use of alternative non-SI units

    9.    Base units, supplementary units and derived units

    10.    Offence

        SCHEDULE

S.I. 58, 2022.

PART I
Preliminary (regs 1-3)

1.    Citation

    These Regulations may be cited as the Civil Aviation (Units of Measurement to be used in Air and Ground Operations) Regulations.

2.    Interpretation

    In these Regulations, unless the context otherwise requires—

    "Ampere (A)" means a constant electric current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in a vacuum, would produce between these conductors a force equal to 2 x 10^{-7'> newton per metre of length;}

    "Becquerel (Bq)" means the activity of a radionuclide having one spontaneous nuclear transition per second;

    "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 (tÂ℃C)" means the Celsius temperature is equal to the difference tÂ℃C = T-T0'> between two thermodynamic temperatures T and T0'> where T0'> equals 273.15 Kelvin;

    "Coulomb (C)" means the quantity of electricity transported in one second by a current of one ampere;

    "Degree Celsius (Â℃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 one volt when it is charged by a quantity of electricity equal to one coulomb;

    "Foot (ft)" means the length equal to 0.3048 metre exactly;

    "Gray (Gy)" means the energy imparted by ionising radiation to a mass of matter corresponding to one joule per kilogram;

    "Henry (H)" means the inductance of a closed circuit in which an electromotive force of one volt is produced when the electric current in the circuit varies uniformly at a rate of one ampere per second;

    "Hertz (Hz)" means the frequency of a periodic phenomenon of which the period is one second;

    "Human performance" means human capabilities and limitations which have an impact on the safety and efficiency of aeronautical operations;

    "Joule (J)" means the work done when the point of application of a force of one Newton is displaced a distance of one 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 one nautical mile per hour;

    "International System of Units (SI)" means a complete, coherent system which includes three classes of units base units, supplementary units; and derived units;

    "Litre (L)" means a unit of volume restricted to the measurement of liquids and gases which is equal to one cubic decimetre;

    "Lumen (lm)" means the luminous flux emitted in a solid angle of one steradian by a point source having a uniform intensity of one candela;

    "Lux (lx)" means the illuminance produced by a luminous flux of one lumen uniformly distributed over a surface of one 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 of a 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 one kilogram gives it an acceleration of one metre per second squared;

    "Ohm means the electric resistance between two points of a conductor when a constant difference of potential of one volt, applied between these two points, produces in this conductor a current of one ampere, this conductor not being the source of any electromotive force;

    "Pascal (Pa)" means the pressure or stress of one 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 which a current of one ampere is produced by an electric potential difference of one volt;

    "Sievert (Sv)" means the unit of radiation dose equivalent corresponding to one 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 one 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 one ampere, when the power dissipated between these points is equal to one watt;

    "Watt (W)" means the power which gives rise to the production of energy at the rate of one joule per second; and

    "Weber (Wb)" means the magnetic flux which, linking a circuit of one turn, produces in it an electromotive force of one volt as it is reduced to zero at a uniform rate in one second.

3.    Application

    These Regulations shall apply to all aspects of civil aviation air and ground operations.

PART II
Standard Application of Units of Measurement (regs 4-7)

4.    SI units

    (1) The International System of Units developed and maintained by the General Conference of Weights and Measures (CGPM) shall, subject to regulations 5 and 6 be used as the standard system of units of measurement for all aspects of civil aviation air and ground operations.

    (2) The prefixes and symbols listed in Table 1 of the Schedule shall be used to form names and symbols of the decimal multiples and submultiples of SI units.

5.    Non-SI units

    (1) The non-SI units listed in Table 2 of the Schedule, shall be used either in lieu of, or in addition to, the SI units as the unit of measure but only as specified in Table 4 of the Schedule.

    (2) The non-SI units listed in Table 3 of the Schedule shall be permitted for temporary use as alternative units of measurement but only for those specific quantities listed in Table 4 of the Schedule.

6.    Application of specific units

    (1) The application of units of measurement for certain quantities used in civil aviation air and ground operations shall be in accordance with Table 4 of the Schedule of these Regulations.

    (2) In instances where the mole is used, the elementary entities shall be specified and may be atoms, molecules, ions, electrons, other particles or specified groups of such particles.

7.    Design, procedures and training

    The means and provisions for design, procedures and training shall be established for operations in environments involving the use of standard and non-SI alternatives of specific units of measurement, or the transition between environments using different units, with due consideration to human performance.

PART III
Termination of Use of Non-SI Alternative Units (regs 8-10)

8.    Termination of use of alternative non-SI units

    The use in civil aviation operations of the alternative non-SI units (Knot, Nautical Mile and foot) shall be terminated on the dates to be established by International Civil Aviation.

9.    Base units, supplementary units and derived units

    The International System of Units is a complete, coherent system which includes three classes of units as depicted in Table 5; supplementary units as depicted in Table 6; and derived units as depicted in Table 7 of the Schedule.

10.    Offence

    Any person who contravenes any provision of these Regulations commits an offence and is liable to the penalties provided under section 88 of the Act.

SCHEDULE
SI UNITS

(regs 4, 5 and 6)