MATS 105 - SOURCE Flashcards
INDICATED AIRSPEED
The uncorrected reading on the airspeed indicator.
MATS ACC > ATS Surveillance > Speed Requests
You may request that a pilot state the aircraft’s speed
“SAY AIRSPEED”
“REPORT AIRSPEED”
“SAY MACH NUMBER”
“REPORT MACH NUMBER”
TAS
TAS (TRUE AIRSPEED) - The airspeed of an aircraft relative to undisturbed air. It is used primarily in flight planning and the enroute portion of flight. When used in pilot/controller communications, it is referred to as “true airspeed” and not shortened to “airspeed.”
TAS is the speed shown on an FDE
TAS can be used for determining potential future conflicts as well as a guideline for the performance capabilities of aircraft (by their filed TAS)
GROUND SPEED (GS)
Ground Speed (GS) is the speed of the aircraft over the surface of the earth.
MACH NUMBER
The ratio of the speed of an object to the local speed of sound.
we typically assign mach number FL290 and above
TC AIM RAC 11.1 Adherence to Mach Number
**
Within CDA, aircraft shall adhere to the Mach number assigned by ATC, to within 0.01 Mach, unless approval is obtained from ATC to make a change or until the pilot receives the initial descent clearance approaching destination. If it is necessary to make an immediate temporary change in the Mach number (e.g. because of turbulence), ATC shall be notified as soon as possible that such a change has been made.
If it is not possible to maintain the last assigned Mach number during en route climbs and descents because of aircraft performance, pilots shall advise ATC at the time of the climb/descent request.
MATS ACC > Separation > Separation Basics
If the type of separation or the minimum used to separate aircraft cannot be maintained….
If the type of separation or the minimum used to separate aircraft cannot be maintained, take action to ensure that another type of separation exists, or another minimum is established, before the current separation becomes insufficient.
WHAT IS TRANSITION SPEED?
Transition speed is the speed at which a pilot makes the transition between indicated airspeed and Mach number when climbing or from Mach number to indicated airspeed when descending.
On exam: question will be, why would you assign speeds to an aircraft*
If required to achieve or maintain required spacing or to minimize vectoring, instruct a pilot to adjust the aircraft’s speed.
Note: avoid repetitive and constant speed changes unless they are required because of traffic flow, traffic levels, pilot workload or airspace design
Express the speed adjustment using either of the following methods:
- As a multiple of 10 knots, based on IAS
- If the aircraft is a turbojet operating in high-level airspace, as a Mach number
Note: Aircraft complying with speed adjustments are expected to maintain a speed within 10 knots of the specified speed
When making speed adjustments, use the guidelines provided in the table below.
MINIMUM ASSIGNABLE SPEEDS
MINIMUM ASSIGNABLE SPEEDS:
Distance to destination: 20 miles or more
- 10000 ASL and above: 250 IAS
- Below 10000 ASL: 210 IAS
Distance to destination: less than 20 miles
- TurboJet
150 IAS - only when required for spacing on final approach
160 IAS - preferred when assigning a speed to cross the final approach fix
- Propeller - 120 IAS
You may assign speeds that are lower than those specified only after coordinating with the pilot.
“CAN YOU MAINTAIN (SPEED)”
“ARE YOU ABLE TO MAINTAIN (SPEED)”
“WHAT IS YOUR MINIMUM APPROACH SPEED?”
***For voice rec in the sim “Are you able Mach .82”. Do not say speed or else you will get Indicated air speed
Some aircraft may be unable to maintain the specified speed. Turbojet aircraft that are less than 10 miles from the runway and are conducting straight in approaches in IMC should not be asked to maintain a speed higher than 160 knots
Do not approve a speed over…
Do not approve a speed over 250 knots IAS below 10000 feet above sea level, but acknowledge a pilot who informs you of a requirement to operate above the CARs-regulated speed limitations for minimum safe speed requirements
If a pilot reports or operates at a speed over 250 knots below 10000 feet above sea level and does not state that it is for minimum safe speed, inform the ACC shift manager.
Pilot: “BURNER THREE EIGHT MINIMUM SAFE SPEED THREE ZERO ZERO KNOTS”
ATC: “BURNER THREE EIGHT ROGER”
According to CAR 602.32, no person shall operate an aircraft in Canada;
(a) BELOW 10,000 ASL at more than 250 KIAS; or
(b) below 3 000 ft AGL within 10 NM of a controlled airport and at more than 200 KIAS, unless authorized to do so in an air traffic control clearance.
Exceptions (dont need to know this)
(a) A person may operate an aircraft at an indicated airspeed greater than the airspeeds referred to in (a) and (b) above where the aircraft is being operated in accordance with a special flight operations certificate – special aviation event issued under CAR 603
(b) If the minimum safe speed, given the aircraft configuration, is greater than the speed referred to in (a) or (b) above, the aircraft shall be operated at the minimum safe speed.
You may instruct a pilot to fly at a specific speed.
MAINTAIN PRESENT SPEED
MAINTAIN PRESENT MACH NUMBER
MAINTAIN [SPEED] (number) KNOTS
MAINTAIN [SPEED] MACH (number)
SPEED (number) KNOTS
Reducing to a Specific Speed or Less
REDUCE TO MINIMUM CLEAN SPEED
REDUCE TO MINIMUN APPROACH SPEED
REDUCE [SPEED] [TO] (number) KNOTS [OR LESS]
REDUCE [SPEED] [TO] MACH (number) [OR LESS]