User's Manual
UL-801 Installation Manual
Page 3
23-20-06 15 December 2011
SatCom weather graphic uplinks via circuit mode data and text weather uplinks via Short
Burst Data (SBD) or packet data mode may or may not be available, based on your selected
DSP and the SatCom equipment installed. In addition, some functions/features may only be
available through specific communications systems as described in the following table.
Communication System
2
Supported Applications
1
AOC Text, and
Text, Weather, and
D-ATIS
ACARS Air
Traffic Services
excluding FANS
Flight
Information
Services (FIS)
3
ATC FANS
1/A+
Weather
Graphics
4
VHF (VDL Mode 2 and POA) Yes Yes Yes Yes No
SatCom (UASC Aero-I) Yes Yes Yes No No
SatCom (UASC Aero-M) Yes No No No Yes
Iridium SatCom ARINC 741 Yes Yes Yes Yes
4
No
Iridium SatCom RS-232 Yes No No No Yes
Inmarsat SatCom ARINC 741 Yes Yes Yes Yes
4
No
Inmarsat SatCom RS-232 Yes No No No Yes
1. Check with the DSP for applicable supported applications.
2. Communication Systems must meet DO-178B Level D to be used for FANS applications.
3. The following Flight Information Services are available thru the internal VHF radio or a capable and
approved Packet Mode Data or Short Burst Data SatCom system. Contact your DSP and SatCom
manufacturer for more information.
• Pre-departure clearance
• Oceanic clearance
• D-ATIS
• TWIP
• Pushback clearance
• Expected taxi clearance
4. Check with the Iridium or Inmarsat SatCom manufacturer for current FANS approvals.
5. Graphical weather information is available only when the UniLink is interfaced to a circuit mode data
SatCom system via the RS-232 connection and supported by the DSP. The older tip and ring circuit mode
data interface that was available on all previous UniLink models, UL-60X and UL-70X, has been removed.
B. Future Air Navigation System (FANS 1/A+)
UniLink system functionality is greatly enhanced by a Future Air Navigation System
(FANS) 1/A+ implementation, which is intended to improve safety of flight, enhance
efficiency, and increase air traffic capacity by replacing voice transmissions between crews
and ATC with datalink messages during flight in oceanic and remote areas that have no or
limited radar coverage. Voice transmissions will continue to be used as a reversionary means
of communication. UniLink provides a FANS-1/A+ implementation as defined in
RTCA/DO-258A and A622. FANS-1/A+ features include AFN, ADS, and CPDLC text data
transmissions.
At least one UASC FMS must be installed and operating with SCN 1000.5/1100.5 or later
for the UniLink FANS-1/A+ implementation. The FMS must be configured to enable FANS
data transmission and must be configured to transmit to UniLink over the UNS HS-429-1
bus.