AIM - RAC 4. 2. 8 - Take-off Clearance

When ready for takeoff, the pilot shall request a takeoff clearance and should include
the runway number. Upon receipt of the takeoff clearance, the pilot shall acknowledge
and take off without delay, or inform ATC if unable to do so.

Pilot:         WINNIPEG TOWER, BEECH ALFA JULIETT GOLF TANGO READY
                 FOR TAKEOFF, RUNWAY THREE SIX.

Tower:     JULIETT GOLF TANGO, WINNIPEG TOWER (any special information -
                hazards, obstructions, turn after takeoff, wind information if required, etc.),
                CLEARED FOR TAKEOFF, RUNWAY THREE SIX (or JULIETT GOLF
                TANGO, WINNIPEG TOWER, FROM GOLF, CLEARED FOR
                TAKEOFF RUNWAY THREE ONE).

Pilot:         JULIETT GOLF TANGO.

A pilot may request to use the full length of the runway for takeoff at any time. If the
runway is to be entered at an intersection so that back tracking is required, the pilot
shall indicate his/her intentions and obtain a clearance for the manoeuvre before
entering the runway.

A pilot may request, or the controller may suggest, takeoff using only part of a runway.
A pilot’s request will be approved provided noise abatement procedures, traffic and
other conditions permit. If suggested by the controller, the available length of the
runway will be stated. It is the pilot’s responsibility to ensure that the portion of the
runway to be used will be adequate for the takeoff run.

To expedite movement of airport traffic and achieve spacing between arriving and
departing aircraft, takeoff clearance may include the word “immediate”. In such cases,
“immediate” is used for the purpose of air traffic separation. On acceptance of the
clearance, the aircraft shall taxi onto the runway and take off in one continuous movement.
If, in the pilot’s opinion, compliance would adversely affect his/her operations, the pilot
should refuse the clearance. Pilots planning a static takeoff (i.e., a full stop in “position” on
the runway) or a delay in takeoff shall indicate this when requesting takeoff clearance. A
controller may not issue a clearance which would result in a deviation from established
noise abatement procedures or wake turbulence separation minima.

AIP - RAC 1. 7 - ATC Clearances, Instructions and Information

Whenever an ATC clearance is received and accepted by the pilot, compliance shall be
made with the clearance. If a clearance is not acceptable, the pilot should immediately
inform ATC of this fact since acknowledgement of the clearance alone will be taken
by a controller as indicating acceptance. For example, upon receiving a clearance for
takeoff, the pilot should acknowledge the clearance and take off without undue delay
or, if not ready to take off at that particular time, inform ATC of his or her intentions,
in which case the clearance may be changed or cancelled.

A pilot shall comply with an ATC instruction that is directed to and received by the
pilot, provided the safety of the aircraft is not jeopardized.

A clearance will be identified by the use of some form of the word “clear” in its
contents. An instruction will always be worded in such a manner as to be readily
identified, although the word “instruct” will seldom be included. Pilots shall comply
with and acknowledge receipt of all ATC instructions directed to and received by them
(CAR 602.31).

CAR 602.31 permits pilots to deviate from an ATC instruction or clearance in order to
follow TCAS/ACAS resolution advisories. Pilots responding to a resolution advisory
shall advise the appropriate ATC unit of the deviation as soon as practicable and shall
expeditiously return to the last ATC clearance received and accepted, or the last ATC
instruction received and acknowledged prior to the resolution advisory manoeuvre.
Aircraft manoeuvres conducted during a resolution advisory should be kept to the
minimum necessary to satisfy the resolution advisory. For more information on TCAS/
ACAS, see RAC 12.15.2.

ATC is not responsible for the provision of IFR separation to an IFR aircraft which
carries out a TCAS or an ACAS resolution advisory manoeuvre until one of the
following conditions exist:

    (a)    the aircraft has returned to the last ATC clearance received and accepted, or last
            ATC instruction received and acknowledged prior to the resolution advisory; or

    (b)    an alternate ATC clearance or instruction has been issued.
            TCAS or ACAS does not alter or diminish the pilot-in-command’s responsibility to
            ensure safe flight. Since TCAS/ACAS does not respond to aircraft which are not
            transponder-equipped or aircraft with a transponder failure, TCAS/ACAS alone does
            not ensure safe operation in every case. The services provided by ATC units are not
            predicated upon the availability of TCAS or ACAS equipment in an aircraft.

It should be remembered that control is predicated on known air traffic only and, when
complying with clearances or instructions, pilots are not relieved of the responsibility
for practising good airmanship.

A clearance or instruction is only valid WHILE IN CONTROLLED AIRSPACE.
Pilots crossing between controlled and uncontrolled airspace should pay close
attention to the terrain and obstacle clearance requirements.

ATS personnel routinely inform pilots of conditions, observed by others or by
themselves, which may affect flight safety and are beyond their control. Examples of
such conditions are observed airframe icing and bird activity. These are meant solely
as assistance or reminders to pilots and are not intended in any way to absolve the pilot
of the responsibility for the safety of the flight.