Operation Manual Part 2

Aerosoft – Digital Aviation

CRJ-70 & CRJ-900

AOM PART 2

Systems Description

VOL

5-1-67

26-Jul-2017

INITIALIZATION AND ALIGNMENT

Initialization of the IRS systems takes approximately 7 minutes. To complete the process the present position

needs to be entered in the POS INIT page of the flight management system. During initialization, an

initialization alignment message is flashing on the PFD.

Dave allows you to modify initialization time. You may choose between

• Realistic – initialization takes 6 to 17 minutes

• Fast - initialization takes 3 minutes

• Instant – as soon as the switches are set to NAV and position initialization on the FMS is done, the IRS

is aligned

STANDBY INSTRUMENTS AND CLOCKS

The integrated standby instrument is located between the EICAS displays on the center instrument panel. The

standby compass sits under the overhead panel on the center window post. Each pilot has a clock on his side

panel.

INTEGRATED STANDBY INSTRUMENT

The integrated standby instrument, ISI, is supplied with electrical power from the battery bus to ensure

operation even under emergency conditions. They provide attitude, altitude and airspeed information. Air data

input is coming from the alternate pitot probe and static ports.

The ISI is capable to display the following information:

• Attitude

• ILS deviation

• Corrected altitude

• V

display

• Airspeed

• Static source error correction (SSEC)

• Mach number

• Barometric pressure

• Slip-skid indication