Download Radio - Communication

Radio
Communication
Lesson 6.2
Sep 2012
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.
• It’s very important that pilots know these
in order to communicate effectively
around the world over aviation radio
Outline
•
•
•
•
•
Number, Alphabet, and Time
Standard Phrases
Communication Priority
Radio Technique
Emergency Communication
Numbers
• Pronunciation:
– 0
ZEE-RO
5
1
WUN
6
2
TOO
7
3
TREE
8
4
FOW-er
9
– Thousand:
TOU-SAND
Decimal:
DAY-SEE-MAL
• Examples:
– 10
19
800
11 000
One Zero
One Niner
Eight Zero Zero
One One Thousand
FIFE
SIX
SEV-en
AIT
NIN-er
Phonetic Alphabet
• A
B
C
D
E
F
G
H
I
J
K
L
M
Alfa
Bravo
Charlie
Delta
Echo
Foxtrot
Golf
Hotel
India
Juliet
Kilo
Lima
Mike
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
November
Oscar
Papa
Quebec
Romeo
Sierra
Tango
Uniform
Victor
Whiskey
X-ray
Yankee
Zulu
Time
• 24 hour system used to express time:
– 12:00 midnight
12:30 am
2:15 am
5:45 am
12:00 noon
3:30 pm
10:50 pm
0000
0030
0215
0545
1200
1530
2250
• In aviation, co-ordinated universal time (UTC, Z, or
zulu) is normally used
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
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
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
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
Radio Technique
• Call-up
City 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)
Communication Checks
• Radio operators can request radio checks to
determine Readability and/or Strength
• Number
–
–
–
–
–
1
2
3
4
5
Readability
Strength
Unreadable
Readable now and then
Readable with difficulty
Readable
Perfectly Readable
Bad
Poor
Fair
Good
Excellent
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 airground frequency in use
• If no reply on current frequency, switch to distress
frequency: 121.5 MHz
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
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