Block 3 Flashcards
When can you vector into class G airspace?
You may vector an aircraft into Class G airspace if you inform the pilot and obtain
the pilot’s approval.
MINIMUM IFR ALTITUDE
The lowest IFR altitude established for use in a specific airspace. Depending on the airspace concerned, the minimum IFR altitude may be a minimum obstacle clearance altitude (MOCA), a minimum enroute altitude (MEA), a minimum sector altitude (MSA), a minimum vectoring altitude (MVA), a safe altitude 100 NM, a terminal arrival area (TAA), an area minimum altitude (AMA), a transition altitude, or a missed approach altitude. The minimum IFR altitude provides obstacle clearance, but may or may not be within controlled airspace.
MINIMUM OBSTACLE CLEARANCE ALTITUDE (MOCA)
The altitude above sea level between specified fixes on airways or air routes that meets the IFR obstacle clearance requirements for the route segment in question.
This altitude is published on aeronautical charts.
MINIMUM ENROUTE ALTITUDE (MEA)
The altitude above sea level between
specified fixes on airways or air routes that assures acceptable navigational signal coverage and that meets the IFR obstacle clearance requirements.
This altitude is published on aeronautical charts.
MINIMUM SECTOR ALTITUDE (MSA)
The lowest altitude that will provide a
minimum clearance of 1000 ft under conditions of standard temperature and
pressure above all objects located in an area contained within a sector of a circle
with a 25 NM radius centred on a radio aid to navigation or a specified point.
US: minimum safe altitude
MINIMUM VECTORING ALTITUDE (MVA)
The lowest altitude for vectoring
aircraft by ATC that meets obstacle clearance and radio coverage requirements in the airspace specified.
MATS ACC > Traffic Management > Enroute Operations > Altitude
> Minimum Altitudes - When can you assign/approve an altitude below the minimum?
Do not approve or assign any altitude that is below the minimum IFR altitude.
Inform the pilot if a requested altitude is below the minimum IFR altitude.
MATS ACC > Traffic Management > Enroute Operations > Altitude
> Minimum Altitudes
If a pilot requests it, you may approve an altitude that is below the MEA, but is at
or above the MOCA, for any of the following reasons:
* Flight safety
- flight safety may be jeopardized by conditions such as icing or turbulence
* Flight check of a NAVAID[2]
* A MEDEVAC flight
* GNSS navigation
- aircraft operating at the MOCA may be in uncontrolled airspace
- Adequate navigation signal coverage may not always exist below the MEA.
3 GNSS provides adequate navigation accuracy along the entire route segment.
MATS ACC > Traffic Management > Enroute Operations > Altitude
> Minimum Altitudes > Traversing Airways and Routes
When an aircraft is traversing an airway, you may clear that aircraft to an altitude that is below the MEA, but is at or above another applicable minimum IFR altitude.
- Aircraft are considered to traverse an airway when the airspace protected for the track for the track of the aircraft infringes on the airspace to be protected for the airway. An aircraft cleared “via direct” on a track that is coincident with an airway is considered to traverse the airway.
MATS ACC > Traffic Management > Enroute Operations > Altitude
> Minimum Altitudes > MEA Higher or Lower Beyond the Next Fix
If the MEA is higher beyond the next fix, clear the aircraft to climb in sufficient
time to enable it to cross the fix at or above the MEA established beyond the fix.
MATS ACC > Traffic Management > Enroute Operations > Altitude
> Minimum Altitudes > MEA Higher or Lower Beyond the Next Fix
If the pilot requests an altitude that is lower than the MEA for the leg flown, but
the altitude requested is at or above the MEA beyond the next fix, do not clear
the aircraft to descend below the MEA for the leg flown until after the aircraft
passes the fix.
MATS ACC > Traffic Management > Enroute Operations > Altitude
> Altitude Instructions
As required, in an altitude instruction, include one or more items from Altitude
Instructions.
- Pilots are expected to comply with assigned or published altitude crossing restrictions, unless specifically cancelled by ATC.
3
If the pilot is not informed when to expect clearance to a higher altitude, and
communications fail before an approach clearance at an intermediate location
is acknowledged, the aircraft will continue to its destination in accordance
with published communication failure procedures. The pilot is responsible for
advising the controllers when the assigned altitude will not permit the aircraft to proceed to its destination should communications fail.
MATS ACC > Flight Information > Weather Information > Altimeter Setting Information > Altimeter Setting Region
If an aircraft will proceed from the Standard Pressure Region to the Altimeter
Setting Region, issue the current altimeter setting before the transition occurs
MATS ACC > Traffic Management > Enroute Operations > Altitude
> Lowest Usable Flight Level
Do not assign any flight level lower than the lowest usable flight level indicated in
the following table.
Altimeter Setting Lowest Usable FL
29.92 and higher FL180
29.91-28.92 FL190
28.91-27.92 FL200
27.91 and lower FL210
If a change in altimeter setting requires an increase or permits a decrease in the
lowest usable flight level, coordinate with adjacent sectors or units as required.
MATS ACC > Separation > Separation from Special-Use Airspace >
Canadian Class F Airspace > Class F Restricted Airspace (CYR) >
Vertical Separation with a CYR
Apply vertical separation with a CYR as indicated in the tables below.
IFR Above FL290 2000ft minimum
18000 feet ASL to FL290 1000ft min
IFR Abv FL290
29.92 or higher - 2000ft min
29.91 to 28.92 - 3000ft min
28.91 to 27.92 - 4000ft min
27.91 or lower - 5000ft min
IFR 18000 feet ASL to FL290
29.92 or higher - 1000ft min
29.91 to 28.92 - 2000ft min
28.91 to 27.92 - 3000ft min
27.91 or lower - 4000ft min
IFR or CVFR Below 18000 feet ASL - All - 1000ft min
MATS ACC > Flight Information > Weather Information > Altimeter Setting Information
Issue the altimeter setting as follows:
* Identify the setting by the name of the station to which it applies, unless:
◦ The setting applies to the station at which the unit is located.
◦ There is no possibility of misunderstanding.[1]
For example, Toronto ACC issuing an altimeter setting for Peterborough:
For example, Edmonton ACC issuing an altimeter setting for Red Deer and
Edmonton:
If the setting is 28.99 or lower, or 31.00 or higher, state the setting twice
If the setting is higher than 31.00, issue the actual altimeter setting and
confirm that the pilot has set the aircraft altimeter to 31.00.
If the setting is obtained from a weather report that is one hour old or more,
include the time of the report.
If the setting changes by ± 0.02 inches or more, issue a revised altimeter
setting.
- If a pilot asks which type of setting is provided, identify the setting as QNH
(height above sea level).
If no local or remote altimeter is available for a location, inform the pilot when
issuing landing information.
MATS ACC > ATS Surveillance > Altitude Readouts > Validated
Altitude Readouts
You may use validated altitude readouts to determine aircraft altitudes as
indicated in the following table.
Consider an AIrcraft When…
To be maintaining an an altitude - Its altitude readout is within 200 feet of the assigned altitude.
To have reached an altitude - Its altitude readout has been within 200 feet of the assigned for four consecutive readout updates.
To have vacated an altitude - Its altitude readout has changed by 350 feet or more, in the appropriate direction, from the value that prevailed while the aircraft was in level flight.
To have passed an altitude - Its altitude readout has changed by 300 feet or more in the appropriate direction.
MATS ACC > ATS Surveillance > Altitude Readouts > Altitude
Readout Limitations
Use altitude readouts of aircraft under the jurisdiction of another controller to
determine aircraft altitudes only if either of the following applies.
* The other controller has confirmed the aircraft’s altitude.
* On handoff, the transferring controller does not inform you that an aircraft’s
altitude readout is invalid or not validated.
Do not use altitude readouts when the site altimeter setting for the geographic
region concerned is below 26.00 or above 33.00.
CARs 602.31 >Compliance with Air Traffic Control Instructions and Clearances
(1)Subject to subsection (3), the pilot-in command of an aircraft shall
(a) comply with and acknowledge, to the appropriate air traffic
control unit, all of the air traffic control instructions directed to
and received by the pilot-in-command; and
(b) comply with all of the air traffic control clearances received and
accepted by the pilot-in-command and
(i)subject to subsection (2), in the case of an IFR flight, read back to the appropriate air traffic control unit the text of any air traffic control clearance received, and
(ii) in the case of a VFR flight, read back to the appropriate air traffic control unit the text of any air traffic control clearance
received, when so requested by the air traffic control unit.
MATS ACC > Separation > Vertical Separation > Maintaining
Vertical Separation > Assigning Altitudes
You may assign an altitude only after another aircraft previously at that altitude,
or climbing or descending through that altitude, has reported or is observed
doing one of the following:
* Vacating or passing the altitude you want to assign
MATS ACC > Separation > Vertical Separation > Maintaining
Vertical Separation > Assigning Altitudes
You may assign an altitude only after another aircraft previously at that altitude,
or climbing or descending through that altitude, has reported or is observed
doing one of the following:
* Vacating or passing the altitude you want to assign
* Vacating or passing an altitude separated by the appropriate minimum from the altitude you want to assign, and one of the following applies:
◦ Severe turbulence exists.
◦ The aircraft previously at the altitude you want to assign has been issued a cruise climb.
CRUISE CLIMB
A cruising technique resulting in a net increase in altitude as the aircraft mass decreases. A clearance or instruction to carry out a cruise climb allows the pilot the option of climbing at any given rate, as well as the option of levelling off at any intermediate altitude.
STANDARD TERMINAL ARRIVAL (STAR)
An IFR ATC arrival procedure published
in the CAP for use by aircraft with the appropriate navigation capabilities and
coded in many GNSS and FMS databases.
TRANSITION - glossary term
Definition 1: The general term that describes the change from one phase of flight or flight conditions to another, e.g. transition from enroute flight to the approach or transition from instrument flight to visual flight
Definition 2: A published procedure used to connect the basic standard
instrument departure (SID) to one or more enroute airways or to connect one or more enroute airways to the basic standard terminal arrival (STAR). More than one transition may be published in the associated SID or STAR or RNAV approach
