Operation Manual Part 2

Aerosoft – Digital Aviation
CRJ-70 & CRJ-900
AOM PART 2
Systems Description
VOL
5
5-1-56
26-Jul-2017
FLIGHT INSTRUMENTS
The flight instruments comprise the electronic flight instrument systems, standby instruments and clocks.
The instruments receive data from the aircraft’s sensors via the air data system, radio altimeter and inertial
reference system. All this information is processed to provide the pilots with the following parameters:
• Barometric and radio Altitude
• Vertical speed
• True and indicated airspeed as well as Mach number
• Airspeed trend
• Overspeed warning
• Airplane attitude
• Heading information
• Navigation information
• Temperature
The electronic flight instruments consist of:
• Two primary flight displays, PFDs (one for each pilot)
• Two multi-function flight displays, MFDs (one for each pilot)
The integrated standby instrument (ISI) provides a backup with the following information:
• Aircraft attitude
• Altitude
• Airspeed information
An independent standby compass (Whiskey compass) provides heading information in relation to magnetic
north. The sources of information are:
• Air data system
o Speed
o Altitude
o Temperature data
• Radio altimeter
o Accurate measurement of height above terrain at low altitudes
• Inertial reference system
o Aircraft attitude
o Heading
o Aircraft position
o Angular rate
o Linear acceleration
• Electronic clock
o Time