Aerodrome 2, 3, 4, 5, 6 and 7

Question 1

When should appropriate aerodrome lighting be displayed?

Answer 1

• Visibility is less than 5km
• Cloud base is less than 700ft
• All times at night

Question 2

Define Windshear

Answer 2

Sustained change in the wind velocity along the aircraft flight path, which occurs significantly faster than the aircraft can accelerate or decelerate

Question 3

Where is Windshear most dangerous?

Answer 3

Low-Level

Question 4

What conditions are conducive to Windshear?

Answer 4

ATCOs should be alert to the possibility of windshear in the following circumstances:
a) Fronts/Squalls/Thunderstorms
b) Low-Level Inversions
c) Local terrain or buildings

Question 5

What may happen if a windshear alert is generated whilst an aircraft is in a turn?

Answer 5

The crew may level the wings to maximize the climb gradient

Question 6

What may the pilots reply to an ATC instruction during a windshear event?

Answer 6

‘Standby’

Question 7

What are the times of Windshear alerts generated on aircraft?

Answer 7

Predictive
Reactive

Question 8

Which takes precedence, Windshear or TCAS alerts?

Answer 8

Windshear

Question 9

A windshear escape manoeuvre usually means a high rate of climb. What may happen as a result?

Answer 9

• Exceedance of Cleared Level
• Loss of Separation

Question 10

What should ATCOs be prepared for if a pilot executes a missed approach due to windshear?

Answer 10

• Climb Straight Ahead
• Level Bust
• Loss of Separation

Question 11

What should ATCOs do upon receipt of a pilot report of windshear?

Answer 11

Relay the information to subsequent inbound and outbound aircraft until confirmation is received that the condition no longer exists

Question 12

Define Prevailing Visibility

Answer 12

The visibility value that is reached or exceeded within at least half the horizon circle of the aerodrome

These areas could comprise contiguous or non-contiguous sectors

Question 13

When is minimum visibility reported?

Answer 13

Visibility in any direction is less than 50% of the prevailing visibility or less than 1500 metres

Question 14

What should happen if significant changes to runway conditions occur?

Answer 14

• Report on ATIS
• Broadcast changes
• Individually tell aircraft for a suitable time

Question 15

What should happen if a pilot reports braking action to be worse than currently promulgated?

Answer 15

• Pilot report is to be passed to the Aerodrome Operator ASAP
• Reassessment of Runway Condition Code

Question 16

Which runway condition codes have braking action good, medium and poor?

Answer 16

5 - Good
3 - Medium
1 - Poor