19. Coordination & Transfer Of Control Flashcards
Define Coordination (EU)
The process, executed between ATC units with adjoining areas of responsibility, of formally advising each other of the planned passage of flights across the boundary, in order to ensure flight safety through consistency of intended actions. (EU)
The act of negotiation between two or more parties each vested with the authority to make executive decisions appropriate to the task being discharged. (UK)
Condense
Stages of Transfer of Control
- Notification of the flight in order to prepare for coordination, as necessary; (notify the ATCO the AC is on its way)
- Coordination of conditions of transfer of control by the transferring ATCU; (details of AC flight)
- Coordination, if necessary, and acceptance of conditions of transfer of control by the accepting ATCU; and (haggle between the receiving controller)
- The transfer of control to the accepting ATCU or control sector.(other ATCO accepting the AC)
What shall ATC units do in regards to coordination?
Establish and apply standardised procedures for the coordination and transfer of control of flights.
Coordination procedures shall conform to the procedures
contained in the following provisions and be specified in
• letters of agreement (LoA) and
• local instructions, as applicable.
What should LoAs and local instruction include? (14)
- Definition of areas of responsibility and common interest, airspace structure and airspace classification(s)
- Any delegation of responsibility for the provision of ATS
- Procedures for the exchange of flight plan and control data, including use of automated and/or verbal coordination messages
- Means of communication
- Requirements and procedures for approval requests
- Significant points, levels or times for transfer of control
- Significant points, levels or times for transfer of communication
- Conditions applicable to the transfer and acceptance of control, such as specified altitudes/flight levels, specific separation minima or spacing to be established at the time of transfer, and the use of automation;
- ATS surveillance system coordination procedures
- SSR code assignment procedures
- Procedures for departing traffic
- Designated holding fixes and procedures for arriving traffic
- Applicable contingency procedures
- Any other provisions or information relevant to the coordination and transfer of control of flights
Transfer of Comms
come up with a question and condense below
In order to optimise ATS provision, it is recommended
that Transfer of Communication takes place before
Transfer of Control at a point/time/distance agreed
upon between the transferring and accepting ATSUs.
It is permitted so that instructions which become
effective later can be issued.
Don’t confuse transfer of communications with transfer
of control!
Where does transfer of control take place?
- Agreed Reporting Point,
- On estimate for FIR boundary,
- At or passing agreed level,
- Climbing or descending to agreed level – providing standard separation exists.
Condense
Coordination Between Area Control (ACC) and Approach Control
Unless specified in letters of agreement or local
instructions, a unit providing approach control
service may issue clearances to any aircraft released
to it by an ACC without reference to the ACC.
An ACC may, after coordination with the unit
providing approach control service, release aircraft
directly to aerodrome control towers if the entire
approach will be made under VMC.
Take off and Clearance Expiry Times
a) Coordinate the departure with traffic not released
to the unit providing approach control service; and (releases)
b) provide en-route separation between departing
aircraft following the same track
c) If take-off time is not specified, the unit providing
approach control service determines the take-off time when necessary to coordinate the departure with traffic released to it.
d) A clearance expiry time is specified by the ACC if a delayed departure would conflict with traffic not released to the unit providing approach control service. If, for traffic reasons of its own, a unit providing approach control service has to specify in addition its own clearance expiry time, this shall not be later than that specified by the ACC
Condense
Coordination Between Area Control (ACC) and Approach Control
Exchange of Movement and Control Data
The unit providing approach control service keeps the ACC
promptly advised of pertinent data on controlled traffic such as:
a) runway(s)-in-use and expected type of instrument approach
procedure;
b) lowest vacant level at the holding fix available for use by the
ACC;
c) average time interval or distance between successive arrivals
as determined by the unit providing approach control service;
d) revision of the expected approach time(EAT) issued by the ACC
when the calculation of the EAT by the unit providing approach
control service indicates a variation of five minutes or such other
time as has been agreed between the two ATCUs concerned;
e) arrival times over the holding fix when these vary by three
minutes, or such other time as has been agreed between the two
ATCUs concerned, from those previously estimated;
f) cancellations of IFR flights, if these will affect levels at the holding fix or expected approach times of other aircraft;
g) aircraft departure times or, if agreed between the
two ATC units concerned, the estimated time at the
control area boundary or other specified point;
h) all available information relating to overdue or
unreported aircraft;
i) missed approaches which may affect the ACC
Coordination between Approach Control and Aerodrome Control
A unit providing approach control service may authorise
an aerodrome control tower to release an aircraft for
take-off subject to the discretion of the aerodrome
control tower with respect to arriving aircraft.
- approach may give tower releases
- tower obtaining authorisation for SVFR
- ETAs, given at least 15 mins prior to ETA
- departure delays due to airspace congestion
Condense
Coordination between tower and approach
a) arrival and departure times;
b) if required, statement that the first aircraft in an approach
sequence is in communication with and is sighted by the
aerodrome control tower, and that reasonable assurance
exists that a landing can be accomplished;
c) all available information relating to overdue or unreported
aircraft;
d) information concerning missed approaches;
e) information on aircraft that constitute essential local
traffic to aircraft under the control of the approach control
unit concerned.
Condense
Coordination between etween Control Positions in the same Unit
Appropriate flight plan and control information is exchanged
between control positions within the same air traffic control
unit, in respect of:
a) All aircraft for which responsibility for control will be transferred from one control position to another;
b) aircraft operating in such close proximity to the boundary between control sectors that control of traffic within an adjacent sector may be affected;
c) all aircraft for which a procedural controller has delegated responsibility for control to a controller using an ATS surveillance system, as well as other aircraft affected.
Condense
Coordination between etween Control Positions in the same Unit
Appropriate flight plan and control information is exchanged
between control positions within the same air traffic control
unit, in respect of:
a) All aircraft for which responsibility for control will be
transferred from one control position to another;
b) aircraft operating in such close proximity to the boundary
between control sectors that control of traffic within an
adjacent sector may be affected;
c) all aircraft for which a procedural controller has delegated
responsibility for control to a controller using an ATS
surveillance system, as well as other aircraft affected.
Coordination In respect of an ATC Advisory Service
ATS units providing Air Traffic Advisory Service
shall apply the same co-ordination procedures
as for the Air Traffic Control Service, with
respect to aircraft having elected to use this
type of service.
Coordination In respect of the provision of Flight Information Service and Alerting Service
Coordination between ATS units providing flight
information service in adjacent FIRs shall be
effected in respect of IFR and VFR flights, in
order to ensure continued flight information
service to such aircraft in specified areas or
along specified routes.
Such coordination shall be effected in
accordance with an agreement between the ATS
units concerned.
What does coordination depend upon? (5)
- The availability of adequate communications channels.
- The functions to be performed.
- The types of data to be exchanged.
- The letters of agreement.
- The processing facilities at the centres concerned
