Terms of
Reference:
The main tasks of the MWG are
to:
a)
estimate monthly and annually the lateral and vertical
occupancies (traffic densities) in the NAT;
b)
estimate the current lateral, longitudinal and vertical
collision risk, as appropriate, to show whether the
respective Target Levels of Safety (TLS) are being met;
c)
periodically perform other data collections (.e.g. core
navigation studies) in order to ensure that the parameter
values within the mathematical collision risk models remain
current.
Composition
The MWG is currently composed of experts from Canada, the
United Kingdom and the United States. In order to ensure
that NAT users' views are represented and to provide
valuable operational experience, the MWG meetings are also
attended by representatives from IATA and IFALPA.
Representatives from Eurocontrol may also be invited as
observers in order to ensure consistency between related
European and North Atlantic work programmes.
Rapporteur/Secretary:
The United States
Working
methods : The MWG meets annualy 2 months prior to the NAT SPG
Meeting and produces a report which is incorporated along
with the report from the Safety Management Coordination Group (SMCG) into "The
Review of System Safety Performance". The report
contains current estimates of collision risk in the NAT
which are compared against previous values and also against
agreed Target Levels of Safety. In this way, the
safety of current separation minima can be demonstrated, any
trends can be identified and remedial action can be
recommended if required. The MWG report also reviews
any mathematical related working papers submitted to the NAT
SPG and details the MWG work programme for the period until
the next NAT SPG meeting.
