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FOR SIMULATION USE ONLY – NOT A TRAINING AID
ATTITUDE ERECT ANNUNCIATOR (ATT ALIGNMENT)
When the inertial reference system attitude erect alignment function has been
initiated, a red ATT ERECT annunciation displays centred above the aircraft
reference symbol on the PFD.
ROLL ATTITUDE SCALE
The attitude indicator also includes a roll attitude scale to allow the pilot to
determine aircraft roll attitude.
It includes a pointer, a zero roll indicator, and markings at 10°, 20°, 30°, 45°, 60°, 90°
and 135°. The pointer moves around the roll attitude scale to maintain an alignment
in a direction perpendicular to the horizon and pointing toward the ground.
The position indicated on the roll attitude scale by the pointer indicates the current
aircraft roll attitude.
Airspeed Indicator
The airspeed indicator (ASI) displays the air data parameters of indicated airspeed,
Mach number, and maximum operating airspeed/Mach number (VMO/MMO).
The airspeed displays a continuous readout of the current ASI in knots, both on a
scale and on a digital readout. A red airspeed limit band indicates maximum
operating airspeed. The airspeed limit band moves to compensate for changes in
altitude.
Air data information is supplied to the ASI on dual data buses. Mach information is
blanked below 0.30 Mach.
On the tape and dial display formats, the airspeed limit band is displayed as a red
section on the airspeed scale from the ADC indicated maximum operating speed
(VMO) to the maximum value on the scale (360 knots on the dial display, 450 knots
on the tape display).
On the tape display an airspeed trend vector is displayed as a green arrow
originating from the centre of the scale and pointing either up or down along the
right edge of the scale. This trend vector indicates the expected airspeed of the
aircraft in 6 seconds if the current acceleration or deceleration of the aircraft
remains the same.
Flap operating speed is indicated by a white band on the right side of the airspeed
tape or outside of the airspeed dial from 80 to 150 knots.
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