User's Manual

UniLink UL-800/801 FANS
SCN 30.X
Operator’s Manual
23-20-06.02 41
December 2011
LOG ON
Menu Navigation: UNILINK MENU > ATC > LOG ON
The ATC LOG ON page is used to log on to an ATC facility via the
ATS Facilities Notification (AFN) application. This log-on functions as
a datalink equivalent to voice initial contact.
Prior to initiating an ATC Log On, the following should be verified:
• The aircraft identification matches the identification in the filed
flight plan
• The flight plan contains the correct aircraft registration and
address
• (If planning to use ADS-C services), ADS-C is ENABLED
• Prior to ATC LOG ON, and throughout FANS operations, the
crew should ensure the flight path intent data (waypoint
Lat/Long, altitude, and offsets) of the Universal Avionics FMS
providing data to the UL-80X remains synchronized to the
navigating FMS by automatic or manual means for at least the
next two waypoints.
Appropriate times and conditions for performing an ATC log on
include:
Time/Condition ATSU/ATC
Prior to takeoff (where permitted or
required), but no earlier than 45
minutes prior to ETD
Current ATSU for the FIR that the
departure airport is located within.
15 minutes or more prior to FIR
boundary estimate, above 10,000 feet
Current ATSU for the FIR in which
the aircraft is operating
Less than 15 minutes prior to FIR
boundary estimate, above 10,000 feet
Next ATSU that provides CPDLC
and/or ADS-C services for the FIR
on that flight