GEN 2  TABLES AND CODES

GEN 2.1  MEASURING SYSTEM, AIRCRAFT MARKINGS, HOLIDAYS

2.1.1  Units Of Measurement

2.1.1.1 The table of units of measurement shown below will be used by aeronautical stations within Kuala Lumpur and Kota Kinabalu FIRs for air and ground operations.
For Measurement ofUnits used
Distance used in navigation, position reporting, etc. - generally in excess of 2 to 3 nautical milesNautical Miles and Tenths
Relatively short distances such as those relating to aerodromes (e.g. runway lengths)Metres
Altitudes, elevations and heightsFeet
Horizontal speed including wind speedKnots
Vertical speedFeet per minute
Wind direction for landing and taking-offDegrees Magnetic
Wind direction except for landing and taking-offDegrees True
Visibility including runway visual rangeKilometres or Metres
Altimeter settingHectopascal
TemperatureDegrees Celsius (Centigrade)
WeightMetric tonnes or Kilograms
TimeHours and Minutes, the day of 24 hours beginning at midnight UTC
2.1.1.2 The prefixes and symbols listed in table shown below shall be used to form names and symbols of the decimal multiples and sub-multiples of SI units

Table: SI unit prefixes

Multiplication FactorPrefixSymbol
1000 000 000 000 000 000 = 1018exaE
1 000 000 000 000 000 = 10 15petaP
1 000 000 000 000 = 10 12teraT
1 000 000 000 = 10 9gigaG
1 000 000 = 10 6megaM
1 000 =10 3kilok
100 = 10 2hectoh
10 = 10 1decada
0.1 = 10-1decid
0.01 = 10 -2centic
0.001 = 10 -3millim
0.000 001 = 10-6microμ
0.000 000 001 = 10 -9nanon
0.000 000 000 001 = 10 -12picop
0.000 000 000 000 001 = 10 -15femtof
0.000 000 000 000 000 001 = 10 -18attoa

2.1.2  Time System

2.1.2.1 Coordinated Universal Time (UTC) is used in air traffic and communications services and in documents published by Aeronautical Information Service. Local time is 8 hours ahead of UTC in Malaysia.
2.1.2.2 In reporting time, the nearest full minute is used. Time checks to aircraft are accurate to within 30 seconds.

2.1.3  Geodetic Reference Datum

2.1.3.1 The published geographical coordinates in the Kuala Lumpur Fir and Kota Kinabalu Fir indicating latitude and longitude are expressed in terms of the World Geodetic System - 1984 (WGS-84) geodetic reference datum.

2.1.4  Aircraft Nationality And Registration Marks

2.1.4.1 The nationality mark for aircraft registered in Malaysia is the figure 9 followed by the letter M. The nationality mark is followed by a hyphen and a registration mark consisting of three letters.

Example: 9M-MAS.

2.1.5  Public Holidays

2.1.5.1