ROC-A Radio Operator Certificate (Aeronautical) · Question
The transmission 'MAYDAY RELAY, MAYDAY RELAY, MAYDAY RELAY' is used by:
MAYDAY RELAY is used by an aircraft or ground station to relay a distress message on behalf of another aircraft or unit that is in distress but unable to establ
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Question: The transmission 'MAYDAY RELAY, MAYDAY RELAY, MAYDAY RELAY' is used by:
Answer options:
- An aircraft in distress transmitting its own emergency. ✅ An aircraft or station relaying a distress message initiated by another unit.
- A ground station attempting to contact a lost aircraft.
- ATC to announce a major airport closure.
Correct answer: An aircraft or station relaying a distress message initiated by another unit.
Explanation: MAYDAY RELAY is used by an aircraft or ground station to relay a distress message on behalf of another aircraft or unit that is in distress but unable to establish direct communication.
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Question explanations
- Who is responsible for ensuring that a radio operator is qualified to operate an aircraft radio station?
- When ATC issues a clearance, what is the pilot's responsibility regarding that clearance?
- While on an IFR flightplan, ATC instructs you to 'Squawk 4321'. What is your correct read-back?
- In uncontrolled airspace, what frequency is typically used for universal communication with a UNICOM station t
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