COMMUNICATION Flashcards
When are headsets to be worn?
Anytime below 15’000 ft or Transition Altitude/Level whichever is higher
By what time should the approach briefing be completed?
Latest 10 min before top of descent
What is the preferred mean of communicating sensitive information over radio?
SATCOM is more secure than VHF, HF and ACRAS
When should the aircrew communicate an in-flight delay to OPS?
Latest 2h before arrival if the ETA differs by more than 15 min
What checks can be done if you suspect a communication failure?
Check frequency
Check volume
Use another speaker/headset
Use secondary VHF/HF radio
Try to get a relay via another aircraft
Check squelsh
What is the air to air frequency in remote areas?
123.45 MHz
How do you adress another CX aircraft for a private ACARS message?
TO_CPAXXX
TO_B-XXX
What words will promt ATC to go into full emergency mode?
Emergency or Fire
What are the VHF emergency frequencies?
121.5
243.0
406.0
What is the purpose of 8.33 kHz?
To split the radio spectrum into narrower band widths to make more frequencies available.
Where is 8.33 kHz capability mandatory?
In Europe above FL195
What are the 8.33 kHz frequencies between 118.000 to 118.025?
118.005
118.010
118.015
What letter is put in the ATC flight plan under item 10a to indicate 8.33 kHz capability?
“Y”
When is a high HF frequency needed?
Generally, the longer the distance the higher the frequency.
Also the higher the sun, the higher the frequency
How long time before an FIR entry should a CPDLC logon be accomplished?
Approximately 15 min before entry
