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  Public Holidays
2.1.5.1.1 The following is a list of national public holidays in Malaysia for 2026.
DATEPUBLIC HOLIDAY

01 January 2026

New Year’s Day

17 & 18 February 2026

Chinese New Year

21 & 22 March 2026

Eid Al-Fitri

01 May 2026

Labour Day

27 May 2026

Eid Al-Adha

31 May 2026

Wesak Day

01 June 2026

King’s Birthday

17 June 2026

Hijri New Year’s Day

25 August 2026

Prophet Muhammad’s Birthday

31 August 2026

National Day

16 September 2026

Malaysia Day

08 November 2026

Deepavali Day

25 December 2026

Christmas

2.1.5.1 The following is a list of national public holidays in Malaysia for 2025.
DATEPUBLIC HOLIDAY
01 January 2025New Year’s Day
29 & 30 January 2025Chinese New Year
31 March & 01 April 2025Eid Al-Fitri
01 May 2025Labour Day
12 May 2025Wesak Day
02 June 2025King’s Birthday
7 June 2025Eid Al-Adha
27 June 2025Hijri New Year’s Day
31 August 2025National Day
05 September 2025Prophet Muhammad’s Birthday
16 September 2025Malaysia Day
20 October 2025Deepavali Day
25 December 2025Christmas