What would be your response to the instruction 'G-SF squawk 7312'?
Looking at the answer options:
7312, Golf Sierra Foxtrot --> CORRECT. The read back should just be the:
- transponder code's 4 digits
- call sign
Selecting squawk 7312, Golf Sierra Foxtrot --> INCORRECT. No need to say 'selecting squawk'. Just read back the code.
Wilco, Golf Sierra Foxtrot --> INCORRECT. You must read back the code
Roger, squawking 7312 --> INCORRECT. 'Roger' is unnecessary. 'Squawking' is incorrect phraseology. Also, this answer is missing the call sign.
Please find SSR transponder related phraseology below:
| Phraseology | Meaning |
| Squawk "1234" | Set the transponder code "1234" |
| Reset squawk "1234" | Reset the previously issued code "1234" |
| Squawk IDENT | Turn on the function IDENT |
| Squawk standby (STBY) | Operate your transponder in the standby mode |
| Confirm squawk | Confirm your squawk, read your squawk |
| Stop squawk | Turn off the transponder |
| Squawk Alpha/Charlie/Sierra | Change the transponder mode to Alpha/Charlie/sierra |
| Squawk VFR | Squawk 7000 in most European countries Squawk 1200 in North America |
| Squawk Mayday | Set the emergency code 7700 on your transponder |
Read-back occurs when ATC transmits certain information and the pilot repeats that information back to ATC. Read-back ensures that important information has been received properly.
The following items must be read back:
- ATC route clearances
- Runway clearances and instructions to: enter, land on, take off from, hold short of, cross, taxi and backtrack
- Runway in use
- Altimeter settings
- SSR (transponder) codes and instructions
- Newly assigned communication channels
- Level instructions
- Heading and speed instructions
- Transition levels (even if obtained from ATIS)
- Type of flight information service offered
- Conditional clearances
- Other clearances or instructions
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