Embraer EMB145 Operation Manual page 2511

NAVIGATION AND
AIRPLANE
COMMUNICATION
OPERATIONS
MANUAL
On airplanes equipped with dual Inertial Reference System (IRS),
replacing the AHRS, the IRS is used as a primary navigation sensor
when other navaid are not available.
The dual FMS configuration may operate with dual IRS and dual GPS,
providing four long-range navigation sensors.
In this configuration, on-side FMS outputs and flight plan information
are available to the opposite-side FMS through an interconnecting bus.
The automatic tuning is made through the RMU for computing an
optimum position. The FMS also includes a radio-tuning page on which
the pilot can manually select VHF NAV, COM, ADF and transponder
frequencies.
Page Code
4C 02
2-18-35
REVISION 35