CAP 413
Radiotelephony Manual
Chapter 5 Page 10
1.10.2
When available the DA service will either be a Danger Area Crossing Service (DACS)
or a Danger Area Activity Information Service (DAAIS). If there is no reply from the
appropriate nominated service unit that is to be called for these services, pilots are
advised to assume that the relevant DA is active and remain outside.
1.10.3
Danger Area Crossing Service
1.10.3.1 The appropriate nominated service unit will, when the DA activity permits, provide a
clearance for an aircraft to cross the danger area under a suitable type of service. The
crossing clearance is only in relation to DA activity. The provision of deconfliction
advice and/or traffic information in relation to other traffic, either inside or operating
close to the DA, will be in accordance with the scope of the specific ATS provided, i.e.
Deconfliction Service, Traffic Service or Basic Service.
1.10.3.2 When used by a DACS unit, the term 'active' means that the DA is published as active
and that there is activity taking place. Where there is no possibility of confusion, the
number of the DA may be replaced by the name, e.g. 'Danger Area Loudwater'.
1.10.3.3 When a DA is notified as not active, or is notified as active and it has been confirmed
that there is no DA activity taking place, the DACS unit may provide a clearance for the
aircraft to cross the DA. Where possible, the pilot should provide the nominated unit
with an estimated crossing time as shown in the following example.
Westbury Approach, G-ABCD,
request Crossing Service for
Danger Area 113
G-ABCD, Westbury Approach,
Danger Area 113 active remain
outside
Danger Area 113 active remaining
outside, changing to Wrayton
Information 125.750, G-ABCD
G-ABCD
Westbury Approach, G-ABCD,
request Crossing Service for
Danger Area 701A between 1430
and 1445
G-ABCD, Westbury Approach,
Danger Area 701A crossing
approved between 1430 and 1445,
report vacated
Danger Area 701A crossing
approved between 1430 and 1445.
Wilco. G-ABCD
G-ABCD, vacated Danger Area 701A
G-CD, Westbury Approach roger,
Basic Service available from Wrayton
125.750
Changing to Wrayton 125.750, G-CD
17 November 2011
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