400 SERIES MAINTENANCE MANUAL
Page 1-3
P/N 190-00140-05
Rev. C
Each of the configurations includes a color display providing graphical moving map capability.
Navigation, communication, and mapping functions are supported by a navigation database
provided by a removable database card. The mapping function has additional support provided
by a built-in ground features base map which may be supplemented by a detailed map provided
on a second removable database card.
Information relative to the installation and operation of the 400 Series is found in the 400 Series
Installation Manual, P/N 190-00140-02.
1.2
FUNCTIONAL SUMMARY
1.2.1
GPS 400
ƒ
Position and velocity determination using signals transmitted by Global Positioning
System (GPS) Satellites.
ƒ
Display of the stored navigation and map database for use by the pilot/flight crew.
ƒ
Area navigation functions using the determined position/velocity and stored
navigation data.
ƒ
Approach navigation functions and the associated database.
ƒ
Interfacing with other flight instruments such as a moving map, autopilot, CDI/HSI
(including OBS), indicators, altitude encoder/serializer, fuel management system, and
annunciators.
ƒ
14 or 28 volt operation.
1.2.2
GNC 420
ƒ
Performs all functions of a GPS 400.
ƒ
Communications transceiver tuning from 118.000 to 136.9916 MHz in 25 kHz or
8.33 kHz increments.
ƒ
Com audio output.
ƒ
10 or 16-watt transmitter.
ƒ
14 or 28 volt operation for 10 watt transmitter;
28 V only for 16 watt transmitter.
1.2.3
GNS 430
ƒ
Performs all functions of a GNC 420.
ƒ
VOR and ILS Localizer Receivers.
ƒ
ILS Glideslope Receiver.
