100+ Free IAA ATCO Licence Theory Practice Questions

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Sample IAA ATCO Licence Theory Practice Questions

Try these sample questions to test your IAA ATCO Licence Theory exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which regulation defines the Standardised European Rules of the Air (SERA) governing airspace operations in Ireland?

A.Commission Implementing Regulation (EU) No 923/2012

B.Commission Regulation (EU) 2015/340

C.ICAO Annex 17

D.Irish Aviation Authority Act 1993

Explanation: Standardised European Rules of the Air (SERA) are established under Commission Implementing Regulation (EU) No 923/2012. This regulation aligns European rules of the air with ICAO standards while addressing specific European Union regional requirements.

2According to EASA SERA, which airspace classes are defined as 'controlled airspace' where an Air Traffic Control service is provided?

A.Classes A, B, C, D, and E

B.Classes A, B, C, and D only

C.Classes A to G inclusive

D.Classes A, B, C, D, E, and F

Explanation: Under EASA SERA and ICAO airspace classifications, controlled airspace comprises Classes A, B, C, D, and E. Air traffic control service is provided to all flights in Classes A, B, and C, to IFR flights and VFR flights in Class D, and to IFR flights in Class E.

3What are the Standard VMC visibility and distance-from-cloud minima for a VFR flight operating at FL90 in Class C airspace in Ireland?

A.8 km flight visibility, 1,500 m horizontal and 1,000 ft vertical separation from clouds

B.5 km flight visibility, 1,500 m horizontal and 1,000 ft vertical separation from clouds

C.5 km flight visibility, 1.5 NM horizontal and 1,000 ft vertical separation from clouds

D.8 km flight visibility, 1,000 m horizontal and 500 ft vertical separation from clouds

Explanation: At and above 10,000 ft AMSL (or FL100), the VMC visibility minimum is 8 km. Below 10,000 ft AMSL (which includes FL90), the VMC minimum is 5 km flight visibility, with 1,500 m horizontal and 1,000 ft (300 m) vertical separation from clouds.

4What altimeter subscale setting must be dialed in by a pilot to read the aircraft's altitude above Mean Sea Level (AMSL)?

A.QNH

B.QFE

C.QNE

D.Standard Altimeter Setting (1013.2 hPa)

Explanation: QNH is the altimeter subscale setting that causes the altimeter to read altitude above mean sea level (AMSL) based on local atmospheric pressure. This is the primary pressure reference used below the transition altitude.

5Under EASA SERA, what is the minimum ground visibility required for an ATC unit to authorize a Special VFR flight to take off or land at an aerodrome within a Control Zone (CTR)?

A.1,500 meters

B.3,000 meters

C.800 meters

D.5,000 meters

Explanation: Under SERA.5010, the ground visibility for a Special VFR flight to take off or land at an aerodrome in a control zone must not be less than 1,500 meters (or flight visibility not less than 1,500 meters if ground visibility is not reported).

6When two aircraft are converging in flight at approximately the same altitude, which aircraft has the right of way according to international and EASA Rules of the Air?

A.The aircraft that has the other on its left

B.The aircraft that has the other on its right

C.The larger or less maneuverable aircraft

D.The aircraft operating under Instrument Flight Rules (IFR)

Explanation: Under SERA.3210, when two aircraft are converging at approximately the same level, the aircraft that has the other on its right shall give way. Therefore, the aircraft that has the other on its left has the right of way.

7Under the SERA semi-circular cruising level system, which range of magnetic tracks requires the assignment of 'even' Flight Levels or altitudes for an IFR flight?

A.180 to 359 degrees

B.000 to 179 degrees

C.090 to 269 degrees

D.270 to 089 degrees

Explanation: Under the SERA cruising-levels table (Appendix 3), cruising levels for IFR flights are based on track: magnetic tracks from 000 to 179 degrees use 'odd' levels, whereas magnetic tracks from 180 to 359 degrees use 'even' levels.

8For a flight intending to operate in controlled airspace, how long prior to departure must a flight plan be submitted under SERA guidelines?

A.At least 60 minutes

B.At least 30 minutes

C.At least 15 minutes

D.At least 120 minutes

Explanation: Under SERA.4001, a flight plan for a flight intending to operate in controlled airspace or cross international borders must be submitted at least 60 minutes before departure (or, if submitted in flight, at a time that ensures receipt at least 10 minutes before the aircraft enters controlled airspace).

9Under EASA Regulation 2015/340, which rating and rating endorsement must a licensed air traffic controller hold to provide radar approach services?

A.Approach Control Surveillance (APS) rating with a Radar (RAD) endorsement

B.Approach Control Procedural (APP) rating

C.Area Control Surveillance (ACS) rating

D.Aerodrome Control Instrument (ADI) rating

Explanation: To provide approach control service with the use of surveillance radar or ADS systems, a controller must hold an Approach Control Surveillance (APS) rating, typically with a Radar (RAD) endorsement. The APP rating covers procedural (non-radar) approach control.

10If a pilot deviates from an ATC clearance in response to a TCAS Resolution Advisory (RA), what is the pilot's primary communication obligation?

A.Notify ATC as soon as possible after commencing the deviation and advise when returning to the clearance

B.Obtain ATC clearance before responding to the RA

C.No notification is required as ATC receives the warning automatically via radar

D.Notify ATC only after the flight has completed and landed

Explanation: Safety rules state that pilots must respond immediately to a TCAS RA, even if it contradicts an ATC clearance. The pilot must notify ATC of the deviation as soon as safety permits, and again when returning to the assigned clearance.

About the IAA ATCO Licence Theory Exam

The Irish Aviation Authority (IAA) Air Traffic Controller Licence Theoretical Knowledge Exam is the official licensing exam for student air traffic controllers in Ireland. Aligned with EASA Commission Regulation (EU) 2015/340, the exam covers international ICAO and European rules of the air (SERA), Shannon FIR/UIR airspace divisions, separation standards, phraseology, radar surveillance, European meteorology, aircraft technical principles, and human performance limits.

Assessment

100 multiple-choice questions across core EASA ATCO subjects: Air Law, Air Traffic Management, Meteorology, Navigation, Aircraft General Knowledge, Human Factors, and Operational Procedures.

Time Limit

2 hours (120 minutes)

Passing Score

75% (EASA standard for written exams)

Exam Fee

Sponsored / Included in cadetship (Irish Aviation Authority (IAA))

IAA ATCO Licence Theory Exam Content Outline

15%

Air Law & Personnel Licensing

EASA Regulation 2015/340, Standardised European Rules of the Air (SERA), ICAO Annexes, licensing rules, and medical qualifications.

25%

Air Traffic Management

ATC services (Aerodrome, Approach, Area), separation standards (radar, procedural, wake turbulence), holding and entry procedures, SIDs/STARs, and coordination.

15%

Meteorology

European weather systems, atmospheric physics, altimetry, icing, turbulence, thunderstorms, and METAR/TAF decoding.

15%

Navigation & Radio Aids

Radio navigation aids (VOR, DME, ILS, NDB), GNSS/PBN principles, earth models, charts, dead reckoning, and altimeter errors.

10%

Aircraft General Knowledge

Principles of flight, secondary controls, turbofan/turboprop systems, cockpit instruments, and aircraft performance/climb descents.

10%

Human Factors & Performance

Aviation physiology (hypoxia, illusions), stress, fatigue, communication barriers, Threat and Error Management (TEM), and CRM/TRM.

10%

Operational Procedures & Equipment

Airport lighting/markings, emergency handling, Search and Rescue (SAR) phases, ASDE-X/ground safety, and console equipment.

How to Pass the IAA ATCO Licence Theory Exam

What You Need to Know

Passing score: 75% (EASA standard for written exams)
Assessment: 100 multiple-choice questions across core EASA ATCO subjects: Air Law, Air Traffic Management, Meteorology, Navigation, Aircraft General Knowledge, Human Factors, and Operational Procedures.
Time limit: 2 hours (120 minutes)
Exam fee: Sponsored / Included in cadetship

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

IAA ATCO Licence Theory Study Tips from Top Performers

1Master the Standardised European Rules of the Air (SERA) and airspace class service divisions in Class C and G airspaces.

2Learn to decode complex METAR/TAF weather strings and identify seasonal European weather hazards like icing and frontal turbulence.

3Practice calculating standard radar separation (3 NM/5 NM) and wake turbulence separation times for Heavy, Medium, and Light aircraft categories.

Frequently Asked Questions

What is the passing score for the IAA ATCO Licence exam?

In accordance with EASA Standards under Regulation (EU) 2015/340, candidates must achieve a minimum score of 75% on written theoretical knowledge examinations.

What medical assessment is required for air traffic controllers in Ireland?

All student and licensed air traffic controllers must hold a valid EASA Class 3 Medical Certificate. The assessment must be renewed periodically according to EASA regulations (every 24 months, or every 12 months for controllers aged 40 and older).

What is the structure of the airspace managed by Ireland?

The Irish Aviation Authority manages the Shannon Flight Information Region (FIR) and Upper Flight Information Region (UIR). Ireland implements Class C airspace for standard airways and terminal control zones, Class D for aerodrome control zones (such as Dublin, Cork, and Shannon), and Class G for uncontrolled airspace.

Are there specific requirements to apply for the Student Controller Programme?

Yes. Applicants must be at least 19 years old to sit licensing exams, hold a minimum of a secondary school Leaving Certificate (including at least 5 passes with Mathematics), and satisfy the security vetting and EASA Class 3 medical requirements.