89000046-014 KSN 780/8XX/900 AeroNav AML STC Installation Manual for Helicopters
Rev 0 Page 6-21
© Honeywell International Inc. Do not copy without express permission of Honeywell.
6.10 Multifunction Displays
The AeroNav XXX can be connected to Multifunction Display Systems via RS232 or ARINC 429. The
AeroNav XXX supports the following Multifunction Display Systems:
Manufacturer Model Data Format Notes
Garmin MX20 RS232
• Aviation No Alt format for
MX20 version 5.5 and
earlier
• Aviation format for MX20
version 5.6 and later.
Garmin GMX200 RS232
• Aviation format for all
GMX200 versions
Avidyne
Corporation
EX500/EX600/EX5000 ARINC 429
• Use GAMA format 2, low
speed
• MFD software P/N 530-
00193-( ) or later is
required
Avidyne
Corporation
FlightMax FSD Series RS232
• GAMA output may also be
used. However, flight
plans with an Arc will be
displayed as a gap.
Table 71 Multifunction Display
6.11 ADS-B Transponder/UAT Output
The AeroNav XXX will transmit ADS-B GPS position data to the following compatible ADS-B capable
transponders/UAT.
Manufacturer Model Notes
Avidyne
Trig
AXP340
TT31
• ADS-B output requires a separate installation approval. See
manufacturer’s AXP322/AXP340 AML STC SA00352BO.
• For ADS-B out compliance, a squat switch is required for
automatically selecting the transponder air or ground
mode of operation. For helicopters without a squat switch,
connect the squat switch input of the transponder to
P1001 pin 8 of one of the AeroNav XXX. Set the
transponder to accept an active low when performing that
squat switch setup.
• The AeroNav XXX retransmits the Altitude data received
from external altitude devices to AXP340. This is a non-
TSO function of the AeroNav XXX and must be tested and
approved by the installer prior to returning the aircraft to
service. The AeroNav XXX will use the airdata source with
the highest priority, reference Section 6.8.1.1
. Installers
must ensure the airdata source being used for transponder
Mode C transmissions complies with 14 CFR 91.217. After
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