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Radio Communication

Radio Communication. Reference. From the Ground Up Chapter 8.4: Radio Communication Procedures Pages 219 - 229. Introduction. There are guidelines and standard procedures for aviation radio communication.

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Radio Communication

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  1. RadioCommunication

  2. Reference From the Ground Up Chapter 8.4: Radio Communication Procedures Pages 219 - 229

  3. Introduction • There are guidelines and standard procedures for aviation radio communication. • It’s very important that pilots know these in order to communicate effectively around the world over aviation radio

  4. Outline • Number, Alphabet, and Time • Standard Phrases • Communication Priority • Radio Technique • Emergency Communication

  5. Numbers • Pronunciation: • 0 ZEE-RO 5 FIFE1 WUN 6 SIX 2 TOO 7 SEV-en 3 TREE 8 AIT 4 FOW-er 9 NIN-er • Thousand: TOU-SANDDecimal: DAY-SEE-MAL • Examples: • 10 One Zero19 One Niner800 Eight Zero Zero11 000 One One Thousand

  6. Phonetic Alphabet • A Alfa N NovemberB Bravo O OscarC Charlie P PapaD Delta Q QuebecE Echo R RomeoF Foxtrot S SierraG Golf T TangoH Hotel U UniformI India V VictorJ Juliet W WhiskeyK Kilo X X-rayL Lima Y YankeeM Mike Z Zulu

  7. Time • 24 hour system used to express time: • 12:00 midnight 000012:30 am 00302:15 am 02155:45 am 054512:00 noon 12003:30 pm 153010:50 pm 2250 • In aviation, co-ordinated universal time (UTC, Z, or zulu) is normally used

  8. Standard Phrases • Acknowledge Let me know you have received and understood this message • Affirmative Yes • Break I hereby indicate the separation between portions of the message • Confirm My version is… is that correct? • Correction I have made an error, the correct version is… • Do you read? I have called you more than once, if you are receiving me, reply • Go ahead Proceed with your message

  9. Standard Phrases • How do you read me? Can you hear me clearly? • I say again I will Repeat • Negative No • Out My transmission is ended, I do not expect a reply from you • Over My transmission is ended, I expect a reply from you • Read back Repeat this message back to me after I have given “Over” • Roger Okay, I have received your message

  10. Standard Phrases • Say again Repeat • Speak slower Talk more slowly • Stand by I must pause for a few seconds • That is correct You have the correct information • Verify Check with the originator • Wilco Your instructions received, understood, and will be complied with

  11. Communication Priority • Communication over the radio follows the following priority: • Emergency communications (Distress and Urgency) • Flight safety communications (ATC clearances, airport advisories, position reports, flight plans etc) • Scheduled broadcasts • Unscheduled broadcasts • Other air-ground communications

  12. Radio Technique • Call-upCity tower, this is Cessna one seven two foxtrot juliet echo sierra, (over) • Reply Foxtrot juliet echo sierra, (this is) city tower • Message City tower, foxtrot juliet echo sierra is transiting through the zone eastbound en route to Oshawa • Acknowledgement Foxtrot juliet echo sierra, city tower, cleared through the zone • End Foxtrot juliet echo sierra, (out)

  13. Communication Checks • Radio operators can request radio checks to determine Readability and/or Strength • Number Readability Strength • 1 Unreadable Bad • 2 Readable now and then Poor • 3 Readable with difficulty Fair • 4 ReadableGood • 5 Perfectly Readable Excellent

  14. Distress • Distress call is made when an aircraft is in grave and imminent danger and requires immediate assistance • Distress call: Mayday – Mayday – Mayday • If in distress, the first call should be made on the air-ground frequency in use • If no reply on current frequency, switch to distress frequency: 121.5 MHz

  15. Urgency • Urgency call is made to a specific station when there is a an urgent message about the safety of a ship, aircraft or person on board or within sight • Also can be used if an aircraft is having difficulties, but immediate assistance is not required • Urgency call: Pan Pan – Pan Pan – Pan Pan

  16. Safety • Safety call indicates that station is about to transmit an important navigation or weather warning to aircraft in flight • Safety call: Security – Security – Security

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