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Figure 11−10−16
Total Air Temperature Probe
An electrically-heated total air temperature (TAT) probe is mounted on the fuselage beneath the
copilot side window. The probe measures the TAT, and supplies this information to the air data
computers (ADC 1 and ADC 2).
FLIGHT INSTRUMENTS
Description
Vol. 2 11−10−15
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
PITOT STATIC & AIR DATA SYSTEM (CONT'D)
Air Data Computer
Each ADC receives pitot static pressures and temperatures from the pitot, static and TAT probes
and pilot-selected inputs. Pilot-selected input cockpit controls include the BARO knob, ADC
reversion switch, several FCP control selections, and the reference speeds (REFS) menu settings.
This data is processed by the air data computers (ADCs), and sent to the EFIS displays, IAPS,
and several aircraft systems.
The ADC calculates the following air data system parameters:
• Pressure altitude and barometric-corrected altitude;
• Static air temperature (SAT);
• Total air temperature (TAT);
• Temperature variations from standard (ISA);
• Vertical speed;
• Indicated airspeed;
• Mach number;
• True airspeed;
• IAS reference;
• Vertical speed reference;
• Airspeed trend vector;
• Transition FL alert (default FL180);
• Static source error correction;
• Maximum speed (VMO and MMO); and
• Overspeed warning.
AIR DATA SYSTEM INDICATIONS
Description
The PFD display presents airspeed, altitude and vertical speed indications. Airspeed information is
displayed on the left side of the PFD. Altitude and vertical speed information are displayed on the
right side.
Airspeed
The pilot can choose either an IAS or Mach airspeed tape as the primary indication of speed. Both
speed tapes provide similar information. The airspeed display is a moving vertical tape, with the
digital display of the current airspeed in the fixed window.
IAS Airspeed Display
The indicated airspeed tape has an airspeed range from 40 to 400 kt. The tape has short tick
marks every 5 knots, long tick marks every 10 knots, and is numerically marked every 20 knots.
FLIGHT INSTRUMENTS
Description
Vol. 2 11−10−16
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
AIR DATA SYSTEM INDICATIONS (CONT'D)
Mach Number and Mach Display
When the IAS airspeed tape is displayed, and the equivalent Mach is 0.40 or greater, a green
3 digit readout of current Mach number is displayed at the bottom of the tape. A grey "M" indicator
also appears in front of the readout.
The Mach based tape is only available when current Mach is greater than 0.40M. The Mach based
tape is automatically selected for display when climbing through approximately 33,600 ft. The crew
can select a Mach tape (provided M >0.40) which replaces the IAS airspeed tape.
Airspeed Trend Vector
The airspeed trend vector originates from the tail of the indicated airspeed arrow. The magenta
trend vector moves vertically in response to aircraft acceleration (extends up) or deceleration
(extends down).
If acceleration remains unchanged, the trend vector continuously predicts the aircraft’s speed in
10 seconds.
Speed Bug
The speed bug is sometimes referred to as the speed bucket because of its unique design. The
bug is 10 knots wide. Measuring from the center, there is a ±5 knot speed deviation to the outer
edges of the indicator.
The SPEED knob, on the flight control panel (FCP), is used to set the airspeed reference bug to
the desired speed on the airspeed tape. When the center of the SPEED knob is pressed, the
speed reference toggles between Mach and IAS. When the FLC pushbutton on the FCP is
pressed, the speed bug automatically aligns itself with the aircraft’s current airspeed. The speed
bug can also be commanded by the FMS in VNAV sub modes.
The speed bug icon and digital readout are cyan when set with the FCP speed knob, and magenta
when set by the FMS.
PFD Airspeed Information
Figure 11−10−17
FLIGHT INSTRUMENTS
Description
Vol. 2 11−10−17
Oct 05/06
CL−605 Flight Crew Operating Manual
PSP 605−6
AIR DATA SYSTEM INDICATIONS (CONT'D)
Reference Speeds
V-speed reference values V1, VR, V2, VT, VAC, and VREF can be presented on the airspeed tape
during takeoff and approach phases of flight. The speeds can be manually set and displayed (cyan
characters) using the PFD REFS menu. They can also be automatically computed and displayed
　
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