User's Manual

UL-801 Installation Manual
Page 32
23-20-06 15 December 2011
Y. Flight Leg Transition
The Flight Leg Transition feature is provided to reduce the crew workload (such as
initializing the Origin of the next flight leg to the Destination of the flight leg that was just
completed). It is also used as a means of automatically logging data from a flight leg that was
just completed if that data may be needed for future reference, such as OOOI times and fuel.
Z. Meteorological Data Reporting Option
The Meteorological Data Reporting Option includes processing of uplink configuration
settings and automatic downlink messaging. Meteorological data items include atmospheric
temperature, pressure, and wind speeds collected at various durations throughout the flight.
Crew interaction is not needed.
AA. ARINC 741 using Iridium or Inmarsat
UniLink provides a standard interface to ARINC 741-capable SatCom-based airborne
telephony systems. The UniLink meets DO-178B level C software requirements necessary
for all FANS messaging. The bearer systems such as Inmarsat and Iridium SatCom Systems
must meet DO-178B level D requirements. Check with the selected SatCom manufacturer
for further details regarding this important issue.
2. Operation
The UniLink is operated by controls provided by the FMS CDU/MCDU. Refer to the
UniLink Operator’s Manual, 23-20-06.01, for UniLink Operating Procedures.
If FANS is enabled, the report number for the UniLink FANS Operations Manual is 23-20-
06.02. This manual must be obtained separately.
The Operator’s Manual introduces the CDU/MCDU, explains the CDU/MCDU operating
philosophy, and provides a detailed explanation of the keyboard keys, Line Select Keys
(LSK), and their associated functions.