CAP 413
Radiotelephony Manual
Chapter 2 Page 21
or,
or,
1.20
Pilot Complaints Concerning Aeronautical Telecommunications
Pilots should report faults concerning services and facilities in the Aeronautical
Mobile
Broadcast and Navigation Services to the Briefing Officer, Senior
Telecommunications Officer or Senior Controller at the destination or airport of first
landing in order that remedial action can be taken. Reports of local unserviceabilities
will be forwarded to the Telecommunications staff if received on RTF by the ATSU.
1.21
Air Traffic Service Complaints Concerning Aircraft Communications
Aircraft radio faults including technical failure, incorrect operating procedures and
misuse of specific radio channels may result in the aircraft operator receiving a
communication from the CAA detailing the fault condition inviting the operator to
explain and/or state what corrective action has been taken.
1.22
Hours of Service and Communications Watch
1.22.1
The hours of service of the radio facilities available in the United Kingdom are
published in the UK AIP (ENR and AD) which also details those periods set aside for
maintenance.
1.22.2
Aircraft stations shall, if possible, communicate directly with the ATSU appropriate to
the area in which the aircraft are flying. If unable to do so, aircraft stations shall use
any relay means available and appropriate to transmit messages to the ATSU.
1.22.3
When normal communications from an aeronautical station to an aircraft station
cannot be established, the aeronautical station shall use any relay means available and
appropriate to transmit messages to the aircraft station.
1.22.4
When an aircraft has established communication with an ATSU it is required to
maintain a listening watch with that ATSU and advise the ATSU when the listening
watch is about to cease. Aircraft should not cease to maintain a listening watch,
except for reasons of safety, without informing the ATSU concerned. A time at which
it is expected that the watch will be resumed must be stated.
Table 11
Readability Scale
Meaning
1
Unreadable
2
Readable now and then
3
Readable but with difficulty
4
Readable
5
Perfectly readable
Borton Tower, G-ABCD, radio check
118.725
G-ABCD, Borton Tower, readability 5
G-CD, Borton Tower, readability 3 with
a loud background whistle
Station calling Borton Tower
readability 1
31 March 2011
Summary of Contents for 413
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