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GCAA ATC Licence study materials
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GCAA ATC Licence practice questions

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Question 1Air Law and GCAA Regulatory Framework

For the issue of an air traffic controller licence, the applicant must hold a valid medical assessment of which class?

  1. Class 4
  2. Class 1
  3. Class 2
  4. Class 3 Correct answer.

Explanation

ICAO Annex 1 and the GCAA air traffic controller licensing regulations require a Class 3 medical assessment for the issue and maintenance of an ATC licence. Class 1 and Class 2 assessments apply to commercial and private pilot licensing respectively.

Question 2Air Law and GCAA Regulatory Framework

An aircraft transponder code of 7700 indicates that the aircraft is in which situation?

  1. The aircraft is being subjected to unlawful interference.
  2. The aircraft is in a state of emergency. Correct answer.
  3. The aircraft is unable to maintain its assigned level.
  4. The aircraft has suffered a radio communication failure.

Explanation

SSR code 7700 is the general emergency code. Code 7600 denotes radio communication failure and code 7500 denotes unlawful interference.

Question 3Air Law and GCAA Regulatory Framework

The minimum ICAO language proficiency level required for an air traffic controller to exercise licence privileges is:

  1. Level 6 Expert
  2. Level 4 Operational Correct answer.
  3. Level 5 Extended
  4. Level 3 Pre-operational

Explanation

An air traffic controller must hold at least ICAO Level 4 (Operational) language proficiency. Level 4 is re-assessed every three years, Level 5 every six years, and Level 6 is not subject to recurrent assessment.

Question 4Air Law and GCAA Regulatory Framework

The minimum age for the issue of an air traffic controller licence under GCAA regulations is:

  1. 25 years
  2. 18 years
  3. 21 years Correct answer.
  4. 23 years

Explanation

The ICAO standard adopted by the GCAA sets the minimum age for an air traffic controller licence at 21 years. A student air traffic controller may be licensed from 18 years.

Question 5Air Law and GCAA Regulatory Framework

Which rating authorises the holder to provide control service to aerodrome traffic on the manoeuvring area and in the vicinity of an aerodrome?

  1. Approach control rating
  2. Approach surveillance rating
  3. Aerodrome control rating Correct answer.
  4. Area control rating

Explanation

The aerodrome control rating authorises the holder to provide aerodrome control service to traffic on the manoeuvring area and in the vicinity of an aerodrome. Approach and area ratings cover different phases of flight.

Question 6Air Law and GCAA Regulatory Framework

A person holding an ATC licence issued by another State may exercise ATC privileges in UAE airspace only when:

  1. the licence is written in English
  2. the licence is notarised by the issuing State
  3. the GCAA has issued a validation for the licence Correct answer.
  4. the holder has five years of experience

Explanation

A foreign ATC licence is not automatically recognised in the UAE. The holder must obtain a validation or authorisation from the GCAA before exercising ATC privileges.

Question 7Air Law and GCAA Regulatory Framework

GCAA Civil Aviation Regulations dealing specifically with the licensing of air traffic controllers are contained in:

  1. CAR Part XI Correct answer.
  2. CAR Part IV
  3. CAR Part V
  4. CAR Part IX

Explanation

The GCAA Civil Aviation Regulations are issued in parts, and Part XI specifically covers air traffic controller licensing. Part V deals with air traffic services and Part IV with aerodromes.

Question 8Air Law and GCAA Regulatory Framework

Who is authorised to conduct the initial Class 3 medical examination for an ATC licence applicant in the UAE?

  1. The applicant's personal physician only
  2. A hospital emergency department
  3. A medical examiner approved by the GCAA Correct answer.
  4. Any registered medical practitioner in the UAE

Explanation

Class 3 medical assessments must be carried out by a medical examiner or medical centre approved by the GCAA. A general practitioner without GCAA approval cannot issue the assessment.

Question 9Air Law and GCAA Regulatory Framework

A student air traffic controller may provide air traffic control service:

  1. only during daylight hours
  2. only under qualified controller supervision Correct answer.
  3. only after completing 100 hours
  4. only at aerodrome control positions

Explanation

A student air traffic controller licence permits the holder to provide ATC service only while under the supervision of a qualified controller. Unsupervised control is not permitted until the appropriate rating is issued.

Question 10Air Law and GCAA Regulatory Framework

Which of the following ATC clearances must be read back in full by the flight crew?

  1. A routine message giving traffic information to the flight
  2. A weather advisory
  3. A NOTAM summary
  4. A clearance to cross an active runway Correct answer.

Explanation

PANS-ATM requires flight crews to read back clearances and instructions that affect safety, including a clearance to cross an active runway. Routine traffic information and weather advisories are not read back in full.

Question 11Air Law and GCAA Regulatory Framework

An air traffic controller holding an approach control rating is authorised to:

  1. issue airworthiness approvals for aircraft and components
  2. provide area control service within any flight information region
  3. provide aerodrome control service at any international aerodrome in the UAE
  4. provide approach control service to arriving and departing flights Correct answer.

Explanation

An approach control rating authorises the holder to provide approach control service to controlled flights arriving at or departing from one or more aerodromes. It does not include aerodrome or area control privileges.

Question 12Air Law and GCAA Regulatory Framework

An ATC licence holder who develops a medical condition that may affect the safe exercise of licence privileges must:

  1. continue if another controller is on duty with him
  2. apply for a student licence until recovered
  3. wait until the next scheduled medical examination
  4. stop exercising privileges and notify the GCAA Correct answer.

Explanation

A licence holder must not exercise the privileges of the licence when aware of a medical condition that may impair safe performance. The condition must be reported so that the GCAA can assess fitness.

Question 13Air Law and GCAA Regulatory Framework

In Class C airspace, VFR flights:

  1. require clearance and IFR separation Correct answer.
  2. require clearance only at night
  3. are not permitted at any time
  4. do not require an ATC clearance at any time

Explanation

In Class C airspace both IFR and VFR flights require an ATC clearance, and ATC provides separation between IFR and VFR flights. VFR flights are not separated from other VFR flights, but traffic information is given.

Question 14Air Law and GCAA Regulatory Framework

For an IFR flight in controlled airspace, a flight plan must be filed:

  1. after take-off once airborne
  2. only when the flight is planned to cross an FIR boundary
  3. only when the weather is below VMC
  4. before departure, with changes reported to ATC Correct answer.

Explanation

An IFR flight in controlled airspace must have a flight plan filed before departure, and any changes must be reported to ATC. This supports separation and search and rescue coordination.

Question 15Air Law and GCAA Regulatory Framework

An air traffic services provider in the UAE is required to establish and maintain:

  1. a pilot training school approved by the GCAA
  2. a safety management system Correct answer.
  3. an aircraft maintenance facility for its fleet
  4. a meteorological office for the aerodrome

Explanation

ICAO Annex 11 and GCAA requirements oblige an ATS provider to establish a safety management system acceptable to the State. The SMS covers hazard identification, risk assessment and safety assurance.

Question 16Air Law and GCAA Regulatory Framework

The GCAA may suspend or revoke an ATC licence when the holder:

  1. takes approved annual leave
  2. fails to maintain medical or competency standards Correct answer.
  3. requests an additional rating for a new aerodrome
  4. transfers to another air traffic services unit

Explanation

The GCAA may suspend or revoke a licence if the holder no longer meets the medical or competency requirements. This protects safety and is subject to the regulatory process.

Question 17Air Law and GCAA Regulatory Framework

An air traffic controller assessed at ICAO language proficiency Level 4 must be re-assessed:

  1. every year
  2. never
  3. every 3 years Correct answer.
  4. every 6 years

Explanation

ICAO language proficiency at Level 4 must be re-assessed every three years. Level 5 is re-assessed every six years and Level 6 does not require recurrent assessment.

Question 18Air Law and GCAA Regulatory Framework

An aerodrome control endorsement on an ATC licence indicates that the holder is competent to:

  1. provide aerodrome control service at the named aerodrome Correct answer.
  2. provide area control services in all UAE flight information regions
  3. operate radar equipment only
  4. conduct flight inspections for the GCAA

Explanation

An aerodrome control endorsement is issued for a specific aerodrome and confirms competence at that location. A controller may not provide aerodrome control at an aerodrome not named in an endorsement.

Question 19Air Law and GCAA Regulatory Framework

A controller holds an area control rating but no aerodrome control rating. During a staff shortage the controller is asked to fill an aerodrome control position. The controller should:

  1. accept, because all ATC ratings are interchangeable
  2. decline, as the rating and endorsement are not held Correct answer.
  3. accept after reading the unit operations manual
  4. accept, provided a more experienced controller is present

Explanation

The privileges of an ATC licence are limited to the ratings and endorsements it contains. A controller without an aerodrome control rating and the relevant aerodrome endorsement cannot lawfully fill an aerodrome control position.

Question 20Air Law and GCAA Regulatory Framework

An ATC unit experiences a loss of separation between two aircraft. Under GCAA occurrence reporting requirements, the unit must:

  1. wait for the aircraft operators to file a report
  2. record it only in the unit diary
  3. report it only if separation was less than half the minimum
  4. report it through the mandatory occurrence reporting system Correct answer.

Explanation

The GCAA requires safety occurrences such as a loss of separation to be reported through the mandatory occurrence reporting system. Reporting supports investigation and safety improvement.

Question 21Air Traffic Services: Separation Standards and Control Procedures

In airspace where RVSM is not applied, the standard minimum vertical separation between aircraft in level flight at or below FL290 is:

  1. 2000 ft
  2. 4000 ft
  3. 1000 ft Correct answer.
  4. 500 ft

Explanation

Outside designated RVSM airspace the standard vertical separation minimum below FL290 is 1000 ft, which corresponds to 300 m. This minimum applies between aircraft at the same or crossing levels and is the basis on which flight levels are allocated in that band.

Question 22Air Traffic Services: Separation Standards and Control Procedures

Reduced vertical separation minimum (RVSM) is applied within the flight level band:

  1. FL300 to FL450
  2. FL200 to FL290
  3. FL290 to FL410 Correct answer.
  4. FL245 to FL400

Explanation

RVSM permits 1000 ft vertical separation in the band between FL290 and FL410 inclusive, where aircraft and operators must be approved and the aircraft altimetry must meet the required performance. Outside that band the standard minima of the surrounding airspace apply.

Question 23Air Traffic Services: Separation Standards and Control Procedures

A pilot who experiences a two-way radio communication failure while under IFR in controlled airspace should set the SSR transponder to code:

  1. 7500
  2. 7700
  3. 7000
  4. 7600 Correct answer.

Explanation

The special purpose codes are 7500 for unlawful interference, 7600 for radio communication failure and 7700 for emergency. Code 7600 alerts the controller that the aircraft cannot communicate, so that the published communication failure procedures can be applied.

Question 24Air Traffic Services: Separation Standards and Control Procedures

The transition altitude is best described as:

  1. The level at which the altimeter is set to the standard pressure of 1013.2 hPa
  2. The altitude at which an aircraft changes from IFR to VFR flight
  3. The lowest flight level available for use above the transition level
  4. The altitude at or below which the vertical position of an aircraft is expressed in altitudes Correct answer.

Explanation

The transition altitude is the altitude at or below which the vertical position of an aircraft is controlled by reference to altitudes, that is, with the altimeter set to the aerodrome QNH. Above the transition altitude, vertical position is expressed in flight levels referenced to 1013.2 hPa.

Question 25Air Traffic Services: Separation Standards and Control Procedures

An aircraft with a maximum certificated take-off mass of 180 000 kg falls into which wake turbulence category?

  1. Heavy Correct answer.
  2. Medium
  3. Super Heavy
  4. Light

Explanation

In the ICAO wake turbulence category scheme, Heavy covers aircraft of 136 000 kg maximum certificated take-off mass or more. Medium covers aircraft above 7000 kg but less than 136 000 kg, and Light covers 7000 kg or less.

Question 26Air Traffic Services: Separation Standards and Control Procedures

Unless a lower minimum is prescribed and approved for a specific area, the standard radar separation minimum between identified aircraft at the same level is:

  1. 10 NM
  2. 5 NM Correct answer.
  3. 8 NM
  4. 3 NM

Explanation

The standard radar separation minimum is 5 NM, applied between identified aircraft whose positions are being continuously monitored. Lower minima such as 3 NM may only be used where specifically prescribed and approved, for example within a terminal control area.

Question 27Air Traffic Services: Separation Standards and Control Procedures

In addition to aircraft identification, the minimum content of a position report over a compulsory reporting point includes:

  1. The position and time, and the next position with the estimated time over it Correct answer.
  2. The fuel remaining in minutes and the alternate aerodrome
  3. The meteorological conditions observed at the reporting point
  4. The pilot's name and the number of persons on board

Explanation

A standard position report contains the aircraft identification, the position, the time over the position, the flight level or altitude, and the next position together with the estimated time over it. Additional items are added only when required by the unit concerned.

Question 28Air Traffic Services: Separation Standards and Control Procedures

When climbing above the transition level, a pilot must change the altimeter reference to:

  1. The QNH of the destination aerodrome
  2. The standard pressure setting of 1013.2 hPa Correct answer.
  3. The QNH of the nearest aerodrome along the route
  4. The QFE of the aerodrome of departure

Explanation

Above the transition level all aircraft use the same reference so that the vertical separation between them is independent of local pressure variations. This reference is the standard pressure setting of 1013.2 hPa, and altitudes so referenced are expressed as flight levels.

Question 29Air Traffic Services: Separation Standards and Control Procedures

In airspace where RVSM is not applied, the minimum vertical separation between aircraft in level flight between FL290 and FL410 is:

  1. 2000 ft Correct answer.
  2. 4000 ft
  3. 500 ft
  4. 1000 ft

Explanation

Outside RVSM airspace the band from FL290 to FL410 requires 2000 ft vertical separation because of the reduced accuracy of pressure altimetry at high altitude. Above and below that band the standard 1000 ft minimum applies, subject to any regional prescription.

Question 30Air Traffic Services: Separation Standards and Control Procedures

A medium category aircraft following a heavy category aircraft on the same approach, with both under radar control, must be separated by at least:

  1. 8 NM
  2. 6 NM
  3. 4 NM
  4. 5 NM Correct answer.

Explanation

The radar wake turbulence separation minimum for a medium aircraft behind a heavy aircraft is 5 NM. This is greater than the 4 NM applied when a heavy follows a heavy, because the smaller aircraft is more vulnerable to the wake of a larger one.

Question 31Air Traffic Services: Separation Standards and Control Procedures

A light category aircraft following a medium category aircraft on the same approach, both under radar control, must be separated by at least:

  1. 3 NM
  2. 5 NM Correct answer.
  3. 4 NM
  4. 6 NM

Explanation

The radar wake turbulence separation minimum for a light aircraft behind a medium aircraft is 5 NM. The larger minimum exists because the wake generated by a medium aircraft can still be hazardous to a much lighter one.

Question 32Air Traffic Services: Separation Standards and Control Procedures

Two aircraft on the same track at the same level are separated by the time technique without radar. The required minimum is:

  1. 5 minutes, reducible to 3 minutes when both aircraft are RNAV equipped
  2. 30 minutes, unless both aircraft are equipped with area navigation equipment and have been radar identified
  3. 15 minutes, reducible to 10 minutes where position and speed can be determined frequently Correct answer.
  4. 10 minutes, reducible to 5 minutes when the aircraft are under radar monitoring

Explanation

The standard longitudinal time separation between aircraft on the same track and level is 15 minutes. It may be reduced to 10 minutes where navigation aids permit frequent determination of position and speed, so that the interval can be reliably maintained.

Question 33Air Traffic Services: Separation Standards and Control Procedures

Where it has been prescribed and approved for the airspace concerned, the reduced radar separation minimum that may be applied between identified aircraft within a terminal control area is:

  1. 3 NM Correct answer.
  2. 10 NM
  3. 5 NM
  4. 4 NM

Explanation

Within a terminal control area, a minimum of 3 NM may be applied where the appropriate authority has prescribed it, typically because radar coverage and traffic density justify the reduction. It applies only to identified aircraft within the defined area and under the stated conditions.

Question 34Air Traffic Services: Separation Standards and Control Procedures

Aircraft established in the same holding pattern at the same holding fix are separated vertically by a minimum of:

  1. 500 ft
  2. 2000 ft
  3. 1000 ft Correct answer.
  4. 3000 ft

Explanation

Each aircraft in a holding stack is allocated a level 1000 ft above or below the next, giving the standard vertical separation minimum used in the hold. Pilots are told the level to expect and the expected further clearance time so they can plan the descent.

Question 35Air Traffic Services: Separation Standards and Control Procedures

Speed control may not be applied by ATC to:

  1. An aircraft on a radar heading outside controlled airspace
  2. An aircraft entering or established in a holding pattern Correct answer.
  3. An aircraft established on the ILS localiser
  4. An aircraft in level cruise flight on an airway

Explanation

Speed control must not be applied to aircraft entering or established in a holding pattern, because the aircraft must be free to fly the published holding speeds and manoeuvre safely. Speed control is likewise avoided below a defined height on final approach, but the holding restriction is the absolute one.

Question 36Air Traffic Services: Separation Standards and Control Procedures

Which of the following instructions must be read back in full by the flight crew?

  1. An instruction to descend to FL240 and maintain Mach 0.78 Correct answer.
  2. A suggestion that the aircraft may like to reduce speed for sequencing purposes
  3. Traffic information and meteorological reports passed by the controller
  4. Information that the runway in use has been changed

Explanation

Clearances and instructions affecting the safety of flight must be read back; these include route clearances, level, heading and speed instructions and runway-in-use. Read-back ensures that the instruction has been correctly received and understood before it is acted upon.

Question 37Air Traffic Services: Separation Standards and Control Procedures

Control of an aircraft is transferred from one ATC unit to the next:

  1. Whenever the aircraft passes the boundary of the flight information region
  2. As soon as the aircraft has been identified by the receiving radar unit
  3. At the point or time agreed between the two units concerned Correct answer.
  4. Only after the pilot has reported establishing two-way contact with the receiving unit

Explanation

Transfer of control takes place at the point or time coordinated and agreed between the two units, and until that point the transferring unit remains responsible for the aircraft. The agreement must be reached before the aircraft reaches the transfer point.

Question 38Air Traffic Services: Separation Standards and Control Procedures

In Class C airspace, separation is provided between:

  1. IFR and VFR flights, with traffic information to VFR flights about other VFR flights Correct answer.
  2. VFR flights only, after they have obtained an ATC clearance
  3. all flights, including separation of VFR flights from each other
  4. IFR flights only, with no traffic information to VFR flights

Explanation

In Class C airspace all flights require a clearance, IFR flights are separated from both IFR and VFR flights, and VFR flights receive traffic information about other VFR flights. VFR flights are not separated from each other, which is what distinguishes Class C from Class B.

Question 39Air Traffic Services: Separation Standards and Control Procedures

Radar separation between two identified aircraft may be discontinued:

  1. When the aircraft are more than 40 NM from the radar head
  2. Once the aircraft have been transferred to the approach controller
  3. Only after another form of separation has been established Correct answer.
  4. At any time, provided both aircraft have previously been identified

Explanation

Radar separation may only be terminated when a non-radar form of separation, such as vertical or longitudinal separation, has been established. Alternative separation must be in place before the radar minimum would otherwise be infringed.

Question 40Air Traffic Services: Separation Standards and Control Procedures

When the Mach number technique is applied to aircraft on the same track at the same level, the aircraft ahead must maintain:

  1. A Mach number lower than that of the following aircraft
  2. Any Mach number, provided the time separation is increased to 15 minutes
  3. The same Mach number as the following aircraft at all times until the level is vacated
  4. A Mach number equal to or greater than that of the following aircraft Correct answer.

Explanation

The technique relies on the leading aircraft not closing the gap on the aircraft behind it, so its Mach number must be equal to or greater than that of the following aircraft. Where the speeds are equal, the interval stays constant; where the leader is faster, the interval increases.

Question 41Air Traffic Services: Separation Standards and Control Procedures

In airspace where RVSM is not applied, the minimum vertical separation between aircraft in level flight above FL410 is:

  1. 4000 ft
  2. 2000 ft
  3. 1000 ft Correct answer.
  4. 3000 ft

Explanation

The prescribed vertical separation is 1000 ft up to and including FL290, 2000 ft between FL290 and FL410, and 1000 ft above FL410. The 2000 ft band exists because of the altimetry tolerances encountered at those intermediate high levels.

Question 42Air Traffic Services: Separation Standards and Control Procedures

Within designated RVSM airspace, an aircraft that is not RVSM approved must be separated from all other aircraft by a minimum of:

  1. 2000 ft Correct answer.
  2. 1000 ft
  3. 4000 ft
  4. 500 ft

Explanation

An aircraft without RVSM approval may not rely on the reduced 1000 ft minimum, so 2000 ft vertical separation must be applied between it and every other aircraft in the RVSM airspace. This is why non-approved flights are normally cleared outside RVSM levels or given special handling.

Question 43Air Traffic Services: Separation Standards and Control Procedures

Which of the following establishes lateral separation between two aircraft?

  1. Keeping the aircraft on different airways whose protected airspaces do not overlap Correct answer.
  2. Applying 10 minutes longitudinal separation between the aircraft
  3. Requiring both aircraft to report over the same VOR at different times
  4. Assigning one aircraft FL350 and the other FL370

Explanation

Lateral separation exists when aircraft fly along different routes, or along the same route with a specified offset, such that the protected airspaces associated with each route do not overlap. It may also be achieved by reference to a navigation aid in defined circumstances.

Question 44Air Traffic Services: Separation Standards and Control Procedures

An aerodrome has a fixed transition altitude. If the QNH falls significantly, the transition level:

  1. Increases, so that at least 1000 ft remains between the transition altitude and the level used Correct answer.
  2. Decreases, because a lower QNH reduces the true height of each flight level
  3. Remains unchanged, because the transition altitude is fixed
  4. Remains unchanged, provided at least 1000 ft exists between the transition altitude and level

Explanation

The transition level must always be at least 1000 ft above the transition altitude. When the QNH falls, aircraft at a given flight level are at a lower true height above the aerodrome, so a higher flight level must be used to preserve that 1000 ft buffer.

Question 45Air Traffic Services: Separation Standards and Control Procedures

Before radar separation may be applied between two aircraft, which combination of conditions is required?

  1. Both aircraft have been assigned the same SSR code
  2. Both aircraft are identified and their positions are continuously monitored within radar cover Correct answer.
  3. Both aircraft have been cleared to fly the same Mach number
  4. Both aircraft have reported over a common compulsory reporting point

Explanation

Radar separation depends on positive identification of both aircraft and continuous monitoring of their positions so that the prescribed minimum can be assured at all times. It also requires that the aircraft remain within radar cover and that communication is maintained.

Question 46Air Traffic Services: Separation Standards and Control Procedures

In airspace where RVSM is applied, the minimum vertical separation between two aircraft that are both RVSM approved is:

  1. 300 m (1000 ft) only above FL290
  2. 300 m (1000 ft) only when both aircraft are in level flight
  3. 300 m (1000 ft) at all levels within the RVSM band Correct answer.
  4. 600 m (2000 ft) at all levels within the designated RVSM band

Explanation

RVSM reduces the vertical separation minimum to 300 m (1000 ft) between RVSM-approved aircraft at every level inside the designated band, normally FL290 to FL410 inclusive. The 600 m (2000 ft) minimum is retained only where an aircraft is not RVSM approved or where the flight is outside the band.

Question 47Air Traffic Services: Separation Standards and Control Procedures

In Class D airspace, ATC provides separation between:

  1. all IFR and VFR flights
  2. all flights, including VFR, during the hours of darkness
  3. VFR flights only
  4. IFR flights only Correct answer.

Explanation

Class D is an airspace where IFR flights are separated from other IFR flights and receive traffic information about VFR flights. VFR flights receive traffic information about all other flights, but separation is not provided between IFR and VFR, nor between VFR flights.

Question 48Air Traffic Services: Separation Standards and Control Procedures

An aircraft is in the HEAVY wake turbulence category when its maximum certificated take-off mass is:

  1. 136 000 kg or more Correct answer.
  2. 300 000 kg or more
  3. less than 7 000 kg
  4. 7 000 kg or more but less than 136 000 kg

Explanation

ICAO wake turbulence categories use maximum certificated take-off mass: HEAVY is 136 000 kg or more, MEDIUM is 7 000 kg or more but less than 136 000 kg, and LIGHT is 7 000 kg or less. The category determines the wake turbulence separation minima applied to following aircraft.

Question 49Air Traffic Services: Separation Standards and Control Procedures

The transition layer is:

  1. the airspace between the transition level and the lower limit of controlled airspace
  2. the airspace between the aerodrome elevation and the transition altitude
  3. the airspace between the transition altitude and FL245
  4. the airspace between the transition altitude and the transition level Correct answer.

Explanation

The transition layer is the airspace between the transition altitude and the transition level. Its thickness varies with the atmospheric pressure, and aircraft change their altimeter reference when passing through it in either direction.

Question 50Air Traffic Services: Separation Standards and Control Procedures

An IFR flight in controlled airspace is to be assigned a cruising level for a magnetic track of 270°. Using the ICAO tables of cruising levels, the level must be selected from:

  1. any level, provided separation from other traffic is assured
  2. odd levels below FL290 and even levels above
  3. odd flight levels
  4. even flight levels Correct answer.

Explanation

In the ICAO tables of cruising levels, magnetic tracks from 000° to 179° are assigned odd levels and tracks from 180° to 359° are assigned even levels. A track of 270° therefore falls in the even-level band.