User's Manual

UniLink UL-800/801 FANS
SCN 30.X
Operator’s Manual
23-20-06.02 1
December 2011
INTRODUCTION
The UniLink Airborne Datalink Product (hereafter referred to as
“UniLink”) is an air-to-ground digital data communication system that
operates with Universal Avionics Systems Corporation’s (UASC’s)
Fight Management Systems (FMSs). It is capable of using a variety of
media such as Satellite Communications (SatCom) and Very High
Frequency (VHF) communications to exchange data with datalink
service providers (DSPs). When communicating over the Aircraft
Communications Addressing and Reporting System (ACARS)
network, UniLink is the functional equivalent of an ARINC 758
Communications Management Unit (CMU). The UL-801 contains an
imbedded VHF data radio (VDR) whereas the UL-800 requires an
external VDR. The VDR provides ACARS and various other types of
network communications capability for UniLink.
The UniLink Future Air Navigation System (FANS) 1/A+
implementation is intended to improve safety of flight, enhance
efficiency, and increase air traffic capacity. Air traffic capacity increase
is promoted by augmenting voice transmissions between crews and
ATC with datalink messages during flight in oceanic and remote areas
that have limited or no radar coverage. The FANS 1/A+
implementation is defined in RTCA/DO-258A and ARINC 622.
Features of this implementation include Air Traffic Services (ATS),
Facilities Notification (AFN), Automatic Dependent Surveillance-
Contract (ADS-C) , and Controller-Pilot Datalink Communications
(CPDLC) text data transmissions.
The FAA has approved the aircraft datalink system to the criteria
contained in AC 20-140A for FANS 1/A+ using VDL M2, VDL M0/A,
and SatCom (IMMARSAT). The datalink system meets the aircraft-
allocated performance requirements of RCP 240 and type 180 (all
sub-networks), and the performance requirements for continental
applications (VDL M2 only). This design approval does not constitute
operational authorization.
NOTE: The colors shown on the screens in this operator’s manual are
based on an FMS with SCN 1000.5/1100.5 installed and
configured for STANDARD-2 color pallet.