Category Archives: Communications IFR

IFR Communications

An aircraft encountering radio communication failure on an IFR flight in IMC has to land, if possible, within:

A: 30 minutes after noticing the radio failure
B: 30 minutes after waiting for the EAT
C: 30 minutes after ETA or the last EAT, whichever is later
D: 15 minutes after vacating the transition layer

 

 

 

 

 

 

 

 

Answer: C

What does “SELCAL” mean:

A: A system in which radiotelephony communication between two stations can take place in both directions simultaneously
B: A system in which radiotelephony communication can be established between aircraft only
C: A system which permits the selective calling of individual aircraft over radiotelephone channels linking a ground station with the aircraft
D: A system provided for direct exchange of information between air traffic services (ATS) units

 

 

 

 

 

 

 

 

Answer: C

An aircraft encountering radio communication failure on an IFR flight in IMC has to hold over the designated navigation aid serving the destination aerodrome:

A: Until the expected approach time last received and acknowledged
B: Under no circumstances
C: 5 minutes in any case
D: 3 minutes, if an expected approach time is not acknowledged

 

 

 

 

 

 

 

 

Answer: A

An aircraft experiencing radio communication failure on an IFR flight in IMC is assumed to:

A: Proceed to an area from where the flight can be continued according to the visual flight rules
B: Divert to the most suitable aerodrome according to the route of flight
C: Execute a VMC approach at the nearest suitable aerodrome
D: Proceed in accordance with the current flight plan to the designated navigation aid serving the destination aerodrome

 

 

 

 

 

 

 

 

Answer: D

What does “Friction coefficient 20” in a runway report mean:

A: Braking action poor
B: Braking action unreliable
C: Braking action medium
D: Braking action good

 

 

 

 

 

 

 

 

Answer: A

 

Friction coefficient:

above 40 = BA Good
35-40 = BA Medium to good
30-35 = BA Medium
25-30 = BA Medium to poor
below 20 = BA Poor

 

there is also another system to denote Friction coefficiency:

95 Good
94 Medium/Good
93 Medium
92 Medium/Poor
91 Poor
99 Unreliable
// Not reported AD closed

The urgency message to be sent by an aircraft reporting an urgency condition shall contain at least the following elements/details :

A: Aircraft call sign, destination airport, ETA at destination, route of flight
B: Aircraft call sign, nature of the urgency condition, pilot’s intention, present position, level and heading
C: Aircraft identification, aerodrome of departure, level and heading
D: Name of the station addressed, present position, assistance required

 

 

 

 

 

 

 

 

Answer: B