AIRPLANE
OPERATIONS
MANUAL
NAVIGATION AND
COMMUNICATION
MARCH 30, 2001
2-18-01
Page
1
Code
01
GENERAL
The standard EMB-145 navigation and communication resources are
provided by the Radio Management System (RMS). The RMS is
controlled through two Radio Management Units (RMU 1 and 2), an
auxiliary control unit, the Tuning Backup Control Head (TBCH), and
three individual Digital Audio Panels (DAP).
The two RMUs provide radio frequency and mode control.
Alternatively, the RMU 2 frequencies may be selected through the
TBCH.
The Audio System is controlled via three individual Digital Audio
Panels, available for the captain, copilot and observer.
The Radio Management System also provides interface with the
Passenger Address System, Aural Warning Unit and Cockpit Voice
Recorder.
Optional communication equipment includes an HF transceiver, Third
VHF NAV/COM, SELCAL and Aircraft Communication Addressing and
Reporting System (ACARS).
The navigation may be performed using only the standard navigation
radio sensors, or using the Flight Management System (FMS)
resources. The FMS is an optional equipment that uses the standard
navigation radio sensors, GPS (Global Positioning System) sensors,
and, also optionally, the IRS (Inertial Reference System) for positioning
and navigation.
Heading inputs to the Integrated Navigation Unit are provided by the
AHRS (Attitude and Heading Reference System) or by the IRS. These
equipment also provide roll and pitch attitudes for the Electronic
Attitude Director Indicator (EADI).
The navigation information is normally presented on the PFD and MFD
and may also be available on the RMU, through its navigation backup
page.
To Next Page
