CH11 / AREA CONTROL SERVICE

Question 1

An aircraft is maintaining FL 150within airspace class O.Another aircraft below at FL 140 is receiving a clearance to descend to FL 70. It is severe turbulence in the area. When is the earliest that a clearance to descend to FL 140or below can be expected?

Answer 1

When the other aircraft has reported that it has descended through FL 130

Question 2

The longitudinal separation minima between aircraft departed from the same aerodrome and following the same track, and the preceding aircraft is maintaining a true airspeed of 20kt or more faster than the succeeding aircraft, is:

Answer 2

5 minutes

Question 3

The longitudinal separation minima based on time between aircraft at same cruising level where navigation aids permit frequent determination of position and speed and the preceeding aircraft is maintaining a true airspeed of 40kt or more faster than the succeeding aircraft, is:

Answer 3

3 minutes

Question 4

The longitudinal separation minima based on time between aircraft at same cruising level where navigation aids permit frequent _determination of position and speed and the preceeding aircraft is maintaining a true airspeed of 20kt or more faster than the succeeding aircraft, is:

Answer 4

5 minutes

Question 5

The longitudinal separation minima based on time between aircraft at same cruising level where navigation aids permit frequent determination of position and speed, is: (time)

Answer 5

10 minutes

Question 6

The longitudinal separation minima between aircraft departed from the same aerodrome and following the same track, and the preceding aircraft is maintaining a true airspeed of 40kt or more faster than the succeeding aircraft, is:

Answer 6

3 minutes

Question 7

The longitudinal separation minima based on distance using DME, and each aircraft “on track” uses DME stations, is:

Answer 7

20NM

Question 8

When an aircraft will pass through the level of another aircraft on the same track, the following minimum longitudinal separation shall be provided: time

Answer 8

15 minutes at the time the level is crossed

Question 9

“ESSENTIAL TRAFFIC” is that controlled flight to which the provision of separation by ATC is applicable, but which, in relation to a particular controlled flight is not separated therefore by the appropriate separation minima. Whenever separation minima is not applied. The following flights are considered essential traffic one to each other.

Answer 9

All IFR flights in controlled airspace and controlled VFR

Question 10

Above FL 290 the vertical flight separation between aircraft on the same direction is:

Answer 10

4000ft

Question 11

Track separation between aircraft using the same NDB shall be applied requiring the aircraft to fly:

Answer 11

At least 30° separated at a distance of 15NM or more from the facility

Question 12

Track separation between aircraft using the same FIX shall be applied requiring the aircraft to fly:

Answer 12

At least 45° separated at a distance of 15NM or more from the FIX

Question 13

If an ATC clearance is not suitable to the pilot in command of an aircraft:

Answer 13

He may request and, if practicable, obtain an amended clearance

Question 14

The “VMC and own separation” ATC clearance is used for a controlled flight to cross the level of another controlled flight when:

Answer 14

Requested by the pilot, during the day light and authorized by the state overflown

Question 15

A/C on same level converging track has separation

Answer 15

15min

Question 16

What are the controlled IFR separation methods applied by ATC?

Answer 16

Vertical, horizontal and composite separation

Question 17

The vertical IFR separation minimum being applied by ATC within a controlled airspace below FL 290 is:

Answer 17

1000ft (300m)

Question 18

The vertical IFR separation minimum being applied by ATC within a controlled airspace above FL 290 is:

Answer 18

2000ft (600m)

Question 19

Longitudinal separation minima based on distance using DME for aircraft at the same cruising level and track, provided that each aircraft utilises “on Track” DME stations and separation is checked by obtaining simultaneous DME readings, is: (distance)

Answer 19

20NM

Question 20

A “RNAV” distance based separation minimum may be used at the time the level is crossed, provided that each aircraft reports its distance to or from the same “on track”way-point. This minimum is:

Answer 20

80NM

Question 21

A VFR flight constitutes essential traffic to other VFR flights, when operating in controlled airspace classified as:

Answer 21

B

Question 22

One minute separation may be used between departing aircraft if they are to fly on tracks diverging by at least:

Answer 22

45° immediately after take-off

Question 23

Vertical or horizontal separation shall be provided between:

Answer 23

All flights in class A and B airspaces

Question 24

The separation method whereby the vertical and horizontal separation may be reduced till a maximum of half the standard criteria is called:

Answer 24

Composite separation

Question 25

Lateral separation for RNAV operations is when both aircraft are established on tracks which diverge by at least:

Answer 25

15 degrees

Question 26

Cruising level IFR during cruise within controlled airspace shall be given as flight level (FL)

Answer 26

Above the transition altitude when applicable

Question 27

Aircraft flying along the same track may be separated by DME-distances from the same DME and it is confirmed that the aircraft have passed each other. Specify the shortest difference in DME-distance to make it possible for one aircraft to climb or descend

Answer 27

10NM

Question 28

Track separation between aircraft using the same VOR shall be applied requiring the aircraft to fly:

Answer 28

At least 15° separated at a distance of 15NM or more from the facility

Question 29

ATC clearances are solely issued for:

Answer 29

Expediting and separating air traffic

Question 30

The longitudinal separation minima based on DME, and each aircraft “on track” uses DME stations, is:

Answer 30

10NM provided that the leading aircraft maintains a true airspeed of 20kt or more faster than the succeeding aircraft