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dose equivalent roentgen rem 1 rem = 1 0-2 J/kg
(radiation) equivalent man
exposure roentgen R 1 R = 2.58 x C/kg
(radiation)
pressure bar bar 1 bar = 1 o5 Pa
speed knot kt 1 kt=0.514444 m/s
a) alt~ludee, levation, height, ver(ical speed.
3.2.2.-Non-SI alternative units permitted
for temporary use with the SI
3.3.-Application of specific units
The non-SI units listed in Table 3-3 shall be permitted for The application of units of measurement for certain
temporary use as alternative units of measurement but only quantities used in international civil aviation air and ground
for those specific quantities listed in Table 3-4. operations shall be in accordance with Table 3-4.
Note. -It is intended that the use of the non-SI alternative
units listed in Table 3-3 and applied as indicated in Table 3-4 Note. -Table 3-4 is intended to provide standardization of
will eventually be discontinued in accordance with individual unit units (including prefxes) for those quantities commonly used in
termination dates established by the Council. Termination dates, air and ground operations. Basic Annex provisions apply for
when established, will be given in Chapter 4. units to be used for quantities not listed.
Table 3-4.-Standard application of specific units of measurement
Non-SI
Ref No. Quantity Primary unit alternative unit
(symbol) (symbol)
altitude
area
distance (long)a)
distance (short)
elevation
endurance
height
latitude
length
longitude
h and min
m ft
0 I I1
Annex 5 - Units of Measurement to be used in Air
and Ground Operations
Table 3-4 (cont.)
3 - Standard Application of Units of Measurement
Non-SI
Ref: No. Quantity Primary unit alternative unit
(SY mboll (symbol)
1.11 plane angle (when required, decimal subdivisions of the degree 0
shall be used)
1.12 runway length m
1.13 runway visual range m
1.14 tank capacities (aircraftlb) L
1.15 time s
min
h
d
week
month
Year
km
m3
0
1.16 visibilityc)
1.17 volume
1.18 wind direction (wind directions other than for a landing and
take-off shall be expressed in degrees true; for landing and
take-off wind directions shall be expressed in degrees
magnetic)
2.1 air density
2.2 area density
2.3 cargo capacity
2.4 cargo density
2.5 density (mass density)
2.6 fuel capacity (gravimetric)
2.7 gas density
2.8 gross mass or payload
2.9 hoisting provisions
2.10 linear density
2.11 liquid density
2.12 mass
2.13 moment of inertia
2.14 moment of momentum
2.15 momentum
3.1 air pressure (general)
3.2 altimeter setting
3.3 atmospheric pressure
3.4 bending moment
3.5 force
3.6 fuel supply pressure
kg1m3
kg/m2
kg
kglm3
kglm3
kg
kg/m3
kg
t
kg
kg/m
kg/m3
kg
kg. mZ
kg.mZIs
kg. m/s
3 - Standard Application of Units of Measurement
Table 3-4 (con[.)
Annex 5 - Units of Measurement to be used in Air
and Ground Opemtions
--
Non-SI
Ref NO. Quantity Primary unit alternative unit
(symbol) (symbol)
4. Mechanics
5. Flow
hydraulic pressure
modulus of elasticity
pressure
stress
surface tension
thrust
torque
vacuum
airspeedd)
angular acceleration
angular velocity
energy or work
equivalent shaft power
frequency
ground speed
impact
kinetic energy absorbed by brakes
linear acceleration
power
rate of trim
shaft power
velocity
vertical speed
wind speed
engine airflow
engine waterflow
fuel consumption (specific)
piston engines
turbo-shaft engines
jet engines
fuel flow
fuel tank filling rate (gravimetric)
gas flow
liquid flow (gravimetric)
liquid flow (volumetric)
mass flow
oil consumption
gas turbine
piston engines (specific)
kPa
MPa
kPa
MPa
mN/m
kN
N-m
Pa
Anna 5 - Units of Measurement to be used in Air
and Ground Operations
Table 3-4 (cont.)
3 - Standard Application of Units of Measurement
Ref: No. Quantity
Non-SI
Primary unit alternative unit
(symbol) (symbol)
5.11 oil flow
5.12 pump capacity
5.13 ventilation airflow
5.14 viscosity (dynamic)
5.15 viscosity (kinematic)
6. Thermodynamics
6.1 coefficient of heat transfer
6.2 heat flow per unit area
6.3 heat flow rate
　
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