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for those specific quantities listed in 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
will eventually be discontinued in accordance with individual
unit termination dates established by the Council. Termination
dates, when established, will be given in Chapter 4.
3.3 Application of specific units
The application of units of measurement for certain
quantities used in international civil aviation air and ground
operations shall be in accordance with Table 34.
Note.- Table 3-4 is intended to provide standardization of
units (including prefixes) for those quantities commonly used
in air and ground operations. Basic Annex provisions apply
for units to be used for quantities not listed.
Table 3-4. Standard application of specific units of measurement
Ref. No. Quantity Primary unit alternative unit
(symbol) (symbol!
altitude
area
distance (10ng)~)
distance (short)
elevation
endurance
height
latitude
length
longitude
plane angle (when required, decimal subdivisions of the degree
shall be used)
runway length
runway visual range
m ft
mz
km NM
m
m ft
\ h and min
m ft
, ,?
Annex 5 - Units of Measurement to be used in Air
and Ground Operations 3 - Standard Application of Units of Measurement
Table 3-4 (cont.)
Ref. No. Quantity
Non-SZ
Primary unit alternative unit
(symbol) (symbol)
1.14 tank capacities (aircraftlb)
1.15 time
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
L
S
min
h
d
week
month
year
km
m3
3 - Standard Application of Units of Measurement
Annex 5 - Units of Measurement to be used in Air
and Ground Operations
Table 3-4 (cont.)
Nan-SI
Re$ No. Quantity Primary unit alternative unit
(symbol) (symbol)
9. Acoustics
frequency
mass density
noise level
period, periodic time
sound intensity
sound power
sound pressure
sound level
static pressure (instantaneous)
velocity of sound
volume velocity (instantaneous)
wavelength
10. Nuclear Physics and Ionizing Radiation
10.1 absorbed dose
10.2 absorbed dose rate
10.3 activity of radionuclides
10.4 dose equivalent
10.5 radiation exposure
10.6 exposure rate
a) As used in navigation, generally in excess of 4 000 m.
b) Such as aircraft fuel, hydraulic fluids, water, oil and high pressure oxygen vessels.
c) Visibility of less than 5 km may be given in m.
d) Airspeed is sometimes reported in flight operations in terms of the ratio MACH number.
e) The decibel (dB) is a ratio which may be used as a unit for expressing sound pressure level and sound power level. When used,
the reference level must be specified.
CHAPTER 4. TERMINATION OF USE OF
NON-SI ALTERNATIVE UNITS
Introductory Note.- The non-SZ units listed in Table 3-3 have been
retained temporarily for use as alternative units because of their widespread
use and to avoid potential safety problems which could result from
the lack of international co-ordination concerning the termination of their
use. As termination dates are established by the Council, they will be
reflected as Standards contained in this Chapter. It is expected that the
establishment of such dates will be well in advance of actual termination.
Any special procedures associated with spec@ unit termination will be
circulated to all States separately from this Annex.
4.1 The use in international civil aviation operations of the alternative
non-SI units listed in Table 3-3 shall be terminated on the dates listed in
Table 4-1.
Table 4-1. Termination dates for
non-SI alternative units
Non-SZ
alternative unit Termination date
Nautical mile I not establisheda)
Foot not establishedb)
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附件5--空中和地面运行中所使用的计量单位(41)
