a. Forward to appropriate ATS facilities, as a flight
progresses, current flight plan and control
b. Coordinate flight plan and control information
in sufficient time to permit the receiving facility to
analyze the data and to effect any necessary
additional coordination. This may be specified in a
letter of agreement.
c. Coordinate with adjacent ATS facilities when
airspace to be protected will overlap the common
d. Forward revisions of estimates of 3 minutes or
more to the appropriate ATS facility.
e. Coordinate with adjacent facilities on IFR and
VFR flights to ensure the continuation of appropriate
air traffic services.
8-2-2. TRANSFER OF CONTROL AND
a. Only one air traffic control unit shall control an
aircraft at any given time.
b. The control of an aircraft shall be transferred
from one control unit to another at the time the aircraft
is estimated to cross the control boundary or at such
other point or time agreed upon by the two units.
c. The transferring unit shall forward to the
accepting unit any changed flight plan or control data
which are pertinent to the transfer.
d. The accepting unit shall notify the transferring
unit if it is unable to accept control under the terms
specified, or it shall specify the changes or conditions
required so that the aircraft can be accepted.
e. The accepting unit shall not alter the clearance
of an aircraft that has not yet reached the transfer of
control point without the prior approval of the
f. Where nonradar separation minima are being
applied, the transfer of air-ground communications
with an aircraft shall be made 5 minutes before the
time at which the aircraft is estimated to reach the
boundary unless otherwise agreed to by the control
and/or communication units concerned.
8-2-3. AIR TRAFFIC SERVICES
INTERFACILITY DATA COMMUNICATIONS
Where interfacility data communications capability
has been implemented, its use for ATC coordination
should be accomplished in accordance with regional
Interface Control Documents, and supported by
letters of agreement between the facilities concerned.