CFC International Communication Standards 5 — Questions and Answers
Question 1: Which ICAO annex establishes the standards and recommended practices for the operation of aeronautical telecommunication networks?
- Annex 2
- Annex 6
- Annex 10 (Correct answer)
- Annex 11
Correct answer: Annex 10
ICAO Annex 10, Aeronautical Telecommunications, is the primary standard governing all aeronautical communication systems and procedures.
Question 2: When should a pilot use the phrase 'CORRECTION' during an RT transmission?
- When requesting ATC to amend a clearance
- When reporting a navigational error to ATC
- When the pilot makes an error and must self-correct mid-transmission (Correct answer)
- When disputing an ATC instruction
Correct answer: When the pilot makes an error and must self-correct mid-transmission
'CORRECTION' is used when a speaker realizes they made an error during a transmission and wishes to cancel and retransmit the correct information.
Question 3: What is the purpose of the ICAO 'ATIS' broadcast in international operations?
- To provide traffic advisories to inbound aircraft only
- To relay military airspace restrictions
- To provide continuous non-control information about airport conditions (Correct answer)
- To transmit IFR clearances on departure
Correct answer: To provide continuous non-control information about airport conditions
ATIS (Automatic Terminal Information Service) provides continuous recorded broadcasts of routine airport weather, NOTAM, and operational information to reduce controller workload.
Question 4: Under ICAO standards, numbers in ATC communications containing thousands should be transmitted as:
- The full number spoken digit-by-digit
- Thousands expressed as a group followed by remaining digits (Correct answer)
- Abbreviated to the nearest hundred
- Replaced with flight level designators above FL100
Correct answer: Thousands expressed as a group followed by remaining digits
ICAO prescribes that numbers in the thousands are spoken as a group (e.g., '11,000' = 'one one thousand') for clarity.
Question 5: A pilot who receives an ATC clearance that conflicts with terrain avoidance requirements should:
- Comply with the clearance and file a report afterward
- Request a revised clearance from ATC immediately (Correct answer)
- Declare MAYDAY and deviate as necessary
- Contact the airline dispatcher for guidance first
Correct answer: Request a revised clearance from ATC immediately
The pilot must immediately request a revised clearance from ATC if a clearance conflicts with terrain avoidance, before deviation becomes necessary.
Question 6: In international HF communications over oceanic airspace, position reports are typically made to:
- The destination airport tower
- Oceanic Area Control Centers (OACs) or their delegated HF stations (Correct answer)
- The departure ACC until out of VHF range, then switched off
- Flight information regions only on UHF frequencies
Correct answer: Oceanic Area Control Centers (OACs) or their delegated HF stations
Over oceanic airspace, position reports are made to Oceanic Area Control Centers or their designated HF remote stations responsible for that airspace.
Question 7: When an aircraft is transferred between ATC frequencies in international operations, the standard phrase used by the transferring controller is:
- 'Change to advisory frequency'
- 'Contact (unit) (frequency)' (Correct answer)
- 'Handoff complete, squawk ident'
- 'Switch and report'
Correct answer: 'Contact (unit) (frequency)'
The standard ICAO transfer phrase is 'Contact (facility name) (frequency),' directing the pilot to establish communication on the specified frequency.
CFC International Communication Standards 5
Which ICAO annex establishes the standards and recommended practices for the operation of aeronautical telecommunication networks?