Emergency & Warning Signals

Question 1

Which are the distress and urgent calls?

Answer 1

Distress - Mayday
Urgent - Pan Pan

Question 2

When is an aircraft in distress?

Answer 2

Aircraft is threatened by grave and imminent danger and requires immediate assistance.

Question 3

What does a flashing red light from a tower mean?

Answer 3

Aircraft in the Air - Do not land, aerodrome unsafe

Aircraft/Vehicles on the ground - Move clear of the landing area

Question 4

What does a steady red light from a tower mean?

Answer 4

Aircraft in the Air - Give way to other aircraft and continue circling

Aircraft/Vehicles on the ground - Stop

Question 5

What does a flashing green light from a tower mean?

Answer 5

Aircraft in the Air - Return to aerodrome and wait for permission to land

Aircraft/Vehicles on the ground - Cleared to taxi/proceed

Question 6

What does a steady green light from a tower mean?

Answer 6

Aircraft in the Air - Cleared to Land

Aircraft/Vehicles on the ground - Cleared for Takeoff

Question 7

What does a flashing white light from a tower mean?

Answer 7

Aircraft in the Air - Land at this aerodrome and proceed to apron (Land & Taxi clearance to follow)

Aircraft/Vehicles on the ground - Return to starting point on aerodrome

Question 8

What does red flare from a tower mean?

Answer 8

Do not land for the time being.

Question 9

How will an aircraft in flight acknowledge receipt of a message?

Answer 9

During the day - By rocking the wings, except on base and final

During hours of darkness - By flashing landing lights, or switching nav lights on twice

Question 10

How will an aircraft on the ground acknowledge receipt of a message?

Answer 10

During the day - By moving the ailerons or rudder

During hours of darkness - By flashing landing lights, or switching nav lights on twice