ENR 1.4  ATS AIRSPACE CLASSIFICATION

1.4.1  Classification Of Airspace

1.4.1.1 ATS airspace classification in Kuala Lumpur FIR and Kota Kinabalu FIR.
1.4.1.1.1 Airspace classification have been applied in conformity with ICAO Standards and Recommended Practices, except two-way communications is required also for aircraft in Class G airspace.
1.4.1.2 ATS airspaces are classified and designated in accordance with following:
AirspaceLevelsClassification
FIR (Including ATS routes)

FL 460 / FL 250

A

ATS routes and TMAs

FL 250 / FL 150

A

FL 150 / 10 000 FT ALT

B

10 000 FT ALT / LOWER LIMIT

C
CTRs and ATZs

UPPER LIMIT / GND/SEA

C
Uncontrolled AirspaceBelow FL 250G

Class A. IFR flights only are permitted, all flights are subject to air traffic control service and are separated from each other.

Class B. IFR and VFR flights are permitted, all flights are subject to air traffic control service and are separated from each other.

Class C. IFR and VFR flights are permitted, all flights are subject to air traffic control service and IFR flights are separated from other IFR flights and from VFR flights. VFR flights are separated from IFR flights and receive traffic information in respect of other VFR flights.

Class G. IFR and VFR flights are permitted and receive flight information service if requested.

Note: Where ATS airspace adjoin vertically, i.e. one above the other, flight at a common level would comply with requirements of, and be given services applicable to, the less restrictive class of airspace. Example: Class B airspace shall be considered less restrictive than Class A airspace.

1.4.2  Requirements For Flights

1.4.2.1 The requirements for the flights within each class of airspace are as shown in the table on page ENR 1.4-2.
Class Type of Flight Separation Provided Service Provided VMC Visibility and Distance from Cloud Minima Speed Limitation Radio Communication Requirement ATC Clearance

A

IFR onlyAll aircraftAir Traffic Control ServiceNot applicableNot applicableContinuous two-wayYes

B

IFRAll aircraftAir Traffic Control ServiceNot applicableNot applicableContinuous two-wayYes
VFRAll aircraftAir Traffic Control Service8 KM at and above 10000 FT AMSL, 5 KM below 10000 FT AMSL Clear of cloudsNot applicableContinuous two-wayYes

C

IFRIFR fm IFR IFR fm VFRAir Traffic Control ServiceNot applicableNot applicableContinuous two-wayYes
VFRVFR fm IFR
  1. Air Traffic Control Service for separation from IFR:

  2. VFR/VFR traffic information (and traffic avoidance advice on request)

8 KM at and above 10000 FT AMSL, 5 KM below 10000 FT AMSL, 1500 M horizontal; and 1000 FT vertical distance fm clouds250 KT IAS below 10000 FT AMSLContinuous two-wayYes

G

IFRNilFlight Information ServiceNot applicable250 KT IAS below 10000 FT AMSLContinuous two-wayNo
VFRNilFlight Information Service8 KM at and above 10000 FT AMSL, 5 KM below 10000 FT AMSL. 1500 M horizontal; and 1000 FT vertical distance fm cloud. At and below 3000 FT AMSL. 5 KM clear of cloud and in sight of ground or water250 KT IAS below 10000 FT AMSLContinuous two-wayNo

Note: 1. Classes of airspace D, E and F are not used in Kuala Lumpur and Kota Kinabalu FIRs.

2. VFR Rules - see ENR 1.2