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designated aerodromes for humanitarian reasons, in response
to specific events and circumstances must be adapted to these
circumstances. They set forth the allocation of responsibility
among States and ICAO for the conduct of contingency
planning and the measures to be taken into consideration in
developing, applying and terminating the application of such
plans.
1.4 The guidelines are based on experience which has
shown, inter alia, that the effects of disruption of services in
particular portions of airspace are likely to affect significantly
the services in adjacent airspace, thereby creating a requirement
for international coordination, with the assistance of
ICAO as appropriate. Hence, the role of ICAO in the field of
contingency planning and coordination of such plans is
described in the guidelines. They also reflect the experience
that ICAO’s role in contingency planning must be global and
not limited to airspace over the high seas and areas of
undetermined sovereignty, if the availability of major world air
routes within the air transportation system is to be preserved.
Finally, they further reflect the fact that international organizations
concerned, such as the International Air Transport
Association (IATA) and the International Federation of Airline
Pilots’ Associations (IFALPA), are valuable advisers on the
practicability of overall plans and elements of such plans.
2. Status of contingency plans
Contingency plans are intended to provide alternative facilities
and services to those provided for in the regional air
navigation plan when those facilities and services are
temporarily not available. Contingency arrangements are
therefore temporary in nature, remain in effect only until the
services and facilities of the regional air navigation plan are
reactivated and, accordingly, do not constitute amendments to
the regional plan requiring processing in accordance with the
“Procedure for the Amendment of Approved Regional Plans”.
Instead, in cases where the contingency plan would
temporarily deviate from the approved regional air navigation
plan, such deviations are approved, as necessary, by the
President of the ICAO Council on behalf of the Council.
3. Responsibility for developing,
promulgating and implementing
contingency plans
3.1 The State(s) responsible for providing air traffic
services and related supporting services in particular portions
of airspace is (are) also responsible, in the event of disruption
or potential disruption of these services, for instituting
measures to ensure the safety of international civil aviation
operations and, where possible, for making provisions for
alternative facilities and services. To that end the State(s)
should develop, promulgate and implement appropriate contingency
plans. Such plans should be developed in consultation
with other States and airspace users concerned and with ICAO,
as appropriate, whenever the effects of the service disruption(s)
are likely to affect the services in adjacent airspace.
3.2 The responsibility for appropriate contingency action
in respect of airspace over the high seas continues to rest with
the State(s) normally responsible for providing the services
until, and unless, that responsibility is temporarily reassigned
by ICAO to (an)other State(s).
3.3 Similarly, the responsibility for appropriate contingency
action in respect of airspace where the responsibility for
providing the services has been delegated by another State
continues to rest with the State providing the services until,
and unless, the delegating State terminates temporarily the
delegation. Upon termination, the delegating State assumes
responsibility for appropriate contingency action.
Annex 11 — Air Traffic Services Attachment D
27/11/03 ATT D-2
No. 42
3.4 ICAO will initiate and coordinate appropriate
contingency action in the event of disruption of air traffic
services and related supporting services affecting international
civil aviation operations provided by a State wherein, for some
reason, the authorities cannot adequately discharge the
responsibility referred to in 3.1. In such circumstances, ICAO
will work in coordination with States responsible for airspace
adjacent to that affected by the disruption and in close
consultation with international organizations concerned. ICAO
will also initiate and coordinate appropriate contingency action
at the request of States.
4. Preparatory action
4.1 Time is essential in contingency planning if hazards to
air navigation are to be reasonably prevented. Timely introduction
　
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