AIRCRAFT
DA 42 NG AMM
Indicating Systems
Doc # 7.02.15
Rev. 4
31-40-00
Page 13
15 Mar 2018
C. GMA 1347 Audio Control Panel
The GMA 1347 audio control panel is located in the airplane instrument panel between the
two display screens. The audio control panel integrates the NAV/COM digital audio, intercom
system and marker beacon controls. Manual display reversion is also controlled from the GMA
1347. The GMA 1347 communicates with both IAUs using RS-232 digital interface. For more data
about the audio control panel refer to Section 23-50.
D. GIA 63 W Integrated Avionics Unit (IAU)
The ICS has two GIA 63 W IAUs. The two IAUs are identical and independent. They are both
installed in the avionics rack in the rear fuselage, just aft of the rear baggage frame. The IAU
processes all the data that is displayed on the cockpit display. Either IAU can supply data to either
cockpit display. You cannot service the IAU.
E. GTX 33/335 R Transponder
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The GTX 33/335 R transponder is a solid state Mode-S transponder. The transponder provides
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modes A, C and S functions. The unit is operated directly through the PFD in the cockpit. The
transponder is linked to both IAUs via RS-232 digital interface. The transponder is installed in the
avionics rack in the rear fuselage, just aft of the rear baggage frame.
F. GRS 77/79 Attitude, Heading and Reference Unit (AHRS)
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The GRS 77/79 provides airplane attitude and related flight data to the cockpit displays. The
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GRS 77/79 receives data from the air data computer, the GMU 44 magnetometer and GPS signals
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from the GIA 63 W. The GRS communicates with both the GIA 63 Ws and the cockpit dispays via
ARINC 429 digital interface. The GRS 77/79 is located next to the avionics rack in the rear
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fuselage, just aft of the rear baggage frame.
G. GDC 74A/72 Air Data Computer (ADC)
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The ADC receives data from the pitot/static system, OAT sensor. The ADC uses this data to
provide pressure altitude, airspeed, vertical speed and outside air temperature data to the G1000
system. The ADC communicates with the GIA 63 Ws, GDU 10XX display screens and the
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GRS 77/79 using ARINC 429 digital interface. Software and configuration data is received through
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RS-232 digital interface with the GIA 63 Ws. The ADC is located on the instrument panel shelf.
H. GEA 71
The GEA 71 is a microprocessor based unit that receives and processes signals from airframe and
engine sensors. The GEA 71 communicates directly with both IAUs using RS 485 digital interface.
The GEA 71 is located on the instrument panel shelf.
Summary of Contents for DA 42 NG
Page 933: ...AIRCRAFT DA 42 NG AMM Fuel Doc 7 02 15 Rev 4 28 TITLE Page 1 15 Mar 2018 CHAPTER 28 FUEL ...
Page 1459: ...AIRCRAFT DA 42 NG AMM Lights Doc 7 02 15 Rev 4 33 TITLE Page 1 15 Mar 2018 CHAPTER 33 LIGHTS ...
Page 1711: ...AIRCRAFT DA 42 NG AMM Doors Doc 7 02 15 Rev 4 52 TITLE Page 1 15 Mar 2018 CHAPTER 52 DOORS ...
Page 1853: ...AIRCRAFT DA 42 NG AMM Wings Doc 7 02 15 Rev 4 57 TITLE Page 1 15 Mar 2018 CHAPTER 57 WINGS ...
Page 2071: ...AIRCRAFT DA 42 NG AMM Engine Doc 7 02 15 Rev 4 72 TITLE Page 1 15 Mar 2018 CHAPTER 72 ENGINE ...
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