CAP 413
Radiotelephony Manual
Chapter 3 Page 4
or,
1.2.3.4
Under exceptional circumstances, if instant descent/climb is required, the word
‘immediately’ shall be used.
1.2.3.5
Pilots are expected to comply with ATC instructions as soon as they are issued.
However, when a climb/descent is left to the discretion of the pilot, the words ‘when
ready’ shall be used.
1.2.3.6
Except as described in paragraph 1.4, a pilot receiving a Radar Control Service is not
required to report leaving a level, passing a level, or reaching a level, unless
specifically requested to do so.
1.2.4
When pilots are instructed to report leaving a level, they should advise ATC that they
have left an assigned level only when the aircraft’s altimeter indicates that the aircraft
has actually departed from that level and is maintaining a positive rate of climb or
descent, in accordance with published procedures.
1.2.5
To avoid excessive delays to traffic when ATS surveillance systems are not available,
controllers may authorise an aircraft to climb or descend in VMC, subject to a number
of safeguards, including the pilot agreeing to maintain his own separation from other
aircraft.
BIGJET 347, expedite descent FL180
Expedite descent FL180,
BIGJET 347
BIGJET 347, climb FL280 expedite
until passing FL180
Climb FL280 expedite until passing
FL180, BIGJET 347
BIGJET 347, unable expedite climb
due weight
BIGJET 347, descend immediately
FL200 due traffic
Descend immediately FL200,
BIGJET 347
BIGJET 347, when ready climb
FL280, report leaving FL200
When ready climb FL280, wilco,
BIGJET 347
BIGJET 347, leaving FL200 climbing
FL280
BIGJET 347, Roger
BIGJET 347, maintaining own
separation and VMC descend FL50
31 March 2011
Summary of Contents for 413
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