Longitudinal Seperation Time

Question 1

Longitudinal Separation shall be applied so that the spacing between the?

Answer 1

Estimated positions of the a/c being separated is never less than a prescribed minimum.

Question 2

Longitudinal Separation between a/c following the same or diverging tracks may be maintained by the application of?

Answer 2

Speed control

Including Mach number technique (MNT)

Question 3

Speed control shall be applied to ensure that?

Answer 3

The required separation minimum is maintained

Question 4

Longitudinal Separation shall be established by requiring aircraft to:
3 things

Answer 4

• Depart at a specified time
• To lose time to arrive over a geographical location at a specified time
• to hold over a geographical location until a specified time

Question 5

When a/c are departing at a specified time what separation is required when departing on diverging heading. And what angle must the diverging heading be?

Answer 5

1 minute separation is required when aircraft fly on tracks diverging by at least 45 degrees Immediately after take off.

Question 6

2 minute separation is required when?

Answer 6

the preceding a/c is 40kt or more faster than the following aircraft

Question 7

5 minute separation is required while?

Answer 7

vertical separation does not exist if a departing a/c will be flown through the level of the proceedings departing a/c and both propose to follow the same track.

Question 8

Action must be taken to ensure that 5 minute separation will be maintained or increased while vertical separation does not exist. True or False?

Answer 8

True

Question 9

Define the same track

Answer 9

Same direction tracks an intersecting tracks (or position thereof) the angular difference of which is less than 45 degrees or more than 315 degrees and whose protection areas over lap.

Question 10

Define reciprocal tracks

Answer 10

Opposite direction tracks and intersecting tracks the angular difference of which is more than 135 degrees or less than 225 degrees and whose protection areas over lap

Question 11

Define crossing track

Answer 11

Intersecting tracks, the angular difference of which other than those specified for same track or reciprocal tracks

Question 12

Time based same level Track minimum is how many minutes?

Answer 12

15 minutes

Question 13

Time based- same level and track is reduced to?

Answer 13

10 minutes if nav aids permit frequent determination of position and speed

Question 14

Time based - same level and track can be further reduced from 10 minutes to?

Answer 14

5 minutes
Provided the preceding aircraft is maintaining TAS of 20kts or more faster than the succeeding a/c that have departed same AD
Or

the same exact reporting point.

Or

Between departing and en-route a/c after the en-route a/c has reported over a fix, so located as to ensure 5 minute separation can be established at the point of departing a/c will join the route

Question 15

Time based - same level and track can be further reduced from 5 minutes to?

Answer 15

Reduced to 3 minutes provided the preceding aircraft is maintaining a TAS of 40 kts or more faster than the succeeding aircraft

Question 16

Time based-crossing track

a/c at the same cruising level shall be separated by how many minutes?

Answer 16

15 minutes

Question 17

Time based-crossing track

a/c at same cruising level can be reduced from 15 minute separation to how many minutes and when?

Answer 17

10 minutes

If nav aids permit frequent determination of positions and speed

Question 18

Time based - same track Aircraft climbing or descending through a level at which an a/c is at shall be separated by how many minutes?

Answer 18

15 minutes

Question 19

Time based-same track
Aircraft climbing or descending through a level at which an a/c is at shall be separated by 15 minutes, can be reduced to how many minutes and why?

Answer 19

10 minutes

While vertical separation does not exist if nav aids permit frequent determination of position and speed

Question 20

Time based- same track Aircraft climbing or descending through a level at which an a/c is at shall be separated by 10 minutes whilst vertical Separation does not exist
Providing nav aids provided frequent determination of position and speed. This can be reduced to how many minutes and why?

Answer 20

5 minutes
While vertical separation does not exist provided that the level change is commenced within 10 minutes of the exact reporting point.

Question 21

Time based- crossing track

A/C climbing or descending will be separated by how many minutes?

Answer 21

15 minutes while vertical separation does not exist

Question 22

Time based - crossing track

A/C climbing or descending will be separated by how many minutes? When vertical separation does not exist if navigation aids permit frequent determination of position and speed

Answer 22

10 minutes

Question 23

Time based - Reciprocal tracks

Where lateral separation is not provided, vertical separation shall be provided for at least 10 minutes prior to and after:
2 things

Answer 23

• Time a/c are estimated to pass
• Time a/c are estimated to have passed provided that it has been determined that the aircraft have passed each other. (Minimum need not apply)

Question 24

Departing at a specified time separation can be reduced when?

Answer 24

May be reduced when a/c using parallel runways/ diverging runways which do not cross and lateral separation is applied immediately after taking off.