RePL Radio Communication Procedures 2 — Questions and Answers
Question 1: In the ICAO phonetic alphabet, what is the correct word for the letter 'C'?
- Caesar
- Charlie (Correct answer)
- Canada
- Cobra
Correct answer: Charlie
Charlie is the ICAO phonetic word for 'C', standardised to ensure clarity across different languages and accents.
Question 2: When operating an RPA in a Mandatory Broadcast Zone (MBZ), when must the operator make radio broadcasts?
- Only when other manned aircraft are visually detected
- At fixed 10-minute intervals throughout the entire operation
- Before entering the MBZ and periodically during operations within it (Correct answer)
- Only upon request from a manned aircraft or ATC
Correct answer: Before entering the MBZ and periodically during operations within it
Under CASR Part 101, RPA operators must broadcast their intentions before entering and at regular intervals during operations within an MBZ to alert manned traffic.
Question 3: What does 'Affirm' mean in standard ICAO aviation radio communication?
- Message received
- Yes (Correct answer)
- Understood and will comply
- Acknowledged
Correct answer: Yes
'Affirm' is the ICAO-standard word for 'Yes', used in place of the word 'yes' to avoid confusion with a misheard 'no'.
Question 4: What is a 'readback' requirement in aviation radio communication?
- Repeating the frequency you are currently broadcasting on
- Confirming your aircraft registration to ATC
- Repeating back safety-critical instructions received from ATC verbatim (Correct answer)
- Acknowledging all received messages with the word 'Roger'
Correct answer: Repeating back safety-critical instructions received from ATC verbatim
A readback requires the pilot to repeat safety-critical ATC instructions (such as clearances, runway assignments, and altimeter settings) so ATC can confirm correct receipt.
Question 5: How is the time 1330 (1:30 PM) correctly stated in aviation radio communication?
- One three three zero (Correct answer)
- Thirteen thirty
- One thirty PM
- Thirteen hundred thirty
Correct answer: One three three zero
In aviation, each digit of a time is stated individually, so 1330 is spoken as 'one three three zero' using the 24-hour clock.
Question 6: What is a 'blind transmission' in aviation radio communication?
- A transmission made without holding a valid radio licence
- A transmission made when the operator cannot confirm the receiving party has heard (Correct answer)
- A distress call broadcast on 121.5 MHz
- A transmission deliberately made on an incorrect frequency
Correct answer: A transmission made when the operator cannot confirm the receiving party has heard
A blind transmission is one made when the transmitting pilot cannot verify whether the intended recipient has received the message, but transmits anyway for situational awareness.
Question 7: In the ICAO phonetic alphabet, which word represents the letter 'S'?
- Sugar
- Sierra (Correct answer)
- Sigma
- Saxon
Correct answer: Sierra
Sierra is the ICAO standard phonetic word for the letter 'S', replacing older non-standard words such as 'Sugar' used in earlier military alphabets.
RePL Radio Communication Procedures 2
In the ICAO phonetic alphabet, what is the correct word for the letter 'C'?