Comms Flashcards
VHF frequency range
30 - 300Mhz
Airband is
108.0 - 137.0Mhz
Nav uses
108 - 117.975Mhz
Voice comms use
118 - 137Mhz
MTR
1.23 x (root receiver + root transmitter)
In Europe 8.33 is required above
FL195
If not 8.33 equipped us phrase
‘Negative eight point three three’
Exceptions to single digits
FL100, 200 etc
Transponder codes 7000, 2000 etc
QNH 1000
Time checks
Are to the nearest half a minute
‘Approach’ approach control is
Not necessarily with
‘Arrival’ approach controal radar arrivals is
Always with radar
Phraseology to cancel takeoff before AC starts to move
ATC ‘cancel takeoff
Pilot ‘holding’
Phraseology to cancel takeoff after AC starts to move or has TO power set
ATC ‘stop immediately’
Pilot ‘stopping’
Types of service inside controlled airspace
Flight information service
Alerting service
Radar control service
Types of service inside controlled airspace
Flight information service
Radar information service
Radar advisory service
0.4 and above
Good 5
0.39 to 0.36
Medium to good 4
0.35 to 0.3
Medium 3
0.29 to 0.26
Poor to medium 2
0.25 and below
Poor 1
CAVOK is
10km or more
No cloud below 5000ft or MSA
No CB or TCU
No Significant weather
Responses to traffic
Looking out
Negative contact
Traffic in sight
Position reports
IPTANE
Identification Position Time Altitude Next position and time Ensuing points
4 - 6 may be omitted when prescribed by regional air navigation orders
Special air reports
IPTAM
Identification Position Time Altitude Meteorological info
Special air reports done when
Mod and serv turbulence Mod and serv icing Mountain waves TS embedded, widespread or squall Dust or sand storm Volcanic ash, activity and eruption
Direction finding Q codes are
QDM - magnetic to
QDR - magnetic from
QUJ - true to
QDR - true from
ADF accurace
A - plus minus 2 degrees
B - 5
C - 10
D - worse than 10
Hold instructions
FLIRT
Fix Level Inbound track Right or left turns Time of leg
Message priority
DUDSMR
Distress
Urgency
Direction finding
Safety messages - control, movement and immediate action etc
Meteorological messages
Regularity messages - maintenance, airport facilities etc
HJ
Sunrise to sunset
HN
Sunset to sunrise
HX
No specific working hours
H24
24 hours of operation
HO
During operating hours
HS
Schedules hours