AIP for IRELAND(section ENR-1.4)valid from 14 MAY 2026

ENR 1.4 ATS airspace classification AND DESCRIPTION

1. ATS AIRSPACE CLASSIFICATION

Class	Type of Flight	Separation Provided	Service Provided	VMC visibility and distance from cloud minima	Speed limitation	Radio communication requirement	Subject to ATC clearance
1	2	3	4	5	6	7	8
A	IFR only	All Aircraft	Air traffic control service	Not applicable	N/A	Continuous two-way	Yes
C	IFR	All Aircraft	Air traffic control service	Not applicable	N/A	Continuous two-way	Yes
C	VFR	VFR from IFR Special VFR from Special VFR	(1) Air traffic control service for separation from IFR; (2) Air traffic control service, VFR/VFR Traffic information (and traffic avoidance advice on request)	At and above FL100: 8km flight visibility, 1500m horizontal and 1000ft vertical from cloud. Below FL100: 5km flight visibility, 1500m horizontal and 1000ft vertical from cloud.	250kts IAS below 3050m (10,000ft) AMSL	Continuous two-way	Yes
G	IFR	Nil	Flight Information service if requested	Not applicable	250 kts IAS below 3050m (10,000ft) AMSL	Continuous two-way* (for exception see footnote ¹ below)	No
G	VFR	Nil	Flight Information service if requested	At and above FL100: 8km flight visibility, 1500m horizontal and 1000ft vertical from cloud. Below 3050m (10,000ft) AMSL and above 900m (3000ft) AMSL, or above 300m (1000ft) above terrain, whichever is the higher. Flight visibility of 5km and 1500m horizontally 300m (1000ft) vertically distance from cloud OR At and below 900m (3000ft) AMSL, or 300m (1000ft) above terrain whichever is the higher: flight visibility of 5km (3km for flight at IAS 140kts or less) and Clear of cloud and with the surface in sight. Helicopters may be flown at and below (3000ft) AMSL, or 300m (1000ft) above terrain whichever is the higher: in flight visibility not less than 1500m if manoeuvred at a speed that would give the pilot in command adequate opportunity to observe other traffic or obstacles in good time to avoid collision and when clear of cloud and with the surface in sight.	250kts IAS below 3050m (10,000ft) AMSL	No¹ (for exception see footnote ¹ below)	No

2. ATS Airspace Description

Class A. IFR flights only are permitted;. All flights are provided with air traffic control service and are separated from each other. Continuous air-ground voice communications are required for all flights. All flights shall be subject to ATC clearance.
Class C. IFR and VFR flights are permitted. All flights are provided with 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 and traffic avoidance advise on request. Continuous air-ground voice communications are required for all flights. For VFR flights a speed limitation of 250kts indicated airspeed (IAS) applies below 3050m (10,000ft) AMSL, except where approved by the competent authority for aircraft types, which for technical or safety reasons, cannot maintain this speed. All flights shall be subject to ATC clearance.
Class G. IFR and VFR flights are permitted and receive flight information if requested. All IFR flights shall be capable of establishing air-ground voice communications. A speed of 250kts IAS applies to all flights below 3050m (10,000ft) AMSL, except where approved by the competent authority for aircraft types, which for technical or safety reasons cannot maintain this speed. ATC clearance is not required.
The designation of the airspace classification shall be appropriate to the needs of the Member States, except that all airspace above FL195 shall be classified as Class C airspace.