NOTE : Both sides if the print message is automatically generated ;
____ else from the originating side for manually initiated messages.
R **ON A/C 106-149, 151-199, 211-299, 301-399, 401-499,
Post SB 22-1089 For A/C 151-199,211-212,
DATA LINK AND PRINTER FUNCTIONS - DESCRIPTION AND OPERATION
___________________________________________________________
R 1. General
_______
A. Aircraft Communication Addressing and Reporting System (ACARS) Through the ACARS, the Flight Management (FM) section is able to send information or requests to the ground and in turn receive information or requests from the ground, for information. The ACARS functions are divided into different categories:
-uplink messages: reception of data allowing flight plan, takeoff and wind data initializations, or requests for downlink reports sent by the ground station
-downlink messages: sending of flight reports or requests to the ground
station for data initialization. The ACARS function is enabled via three discretes. Two are OPC options (AOC option activated and mini ACARS option activated) and the other is the datalink inhibit option within the AOC policy file in the AMI (Ref. Para. 2-D : ACARS Programming Options). The ACARS function is available only if both of AOC option is activated and AMI datalink inhibit is set to NO. If either discrete is 'disabled', then the ACARS functions are inhibited, dedicated ACARS prompts are not displayed and ACARS specific pages cannot be reached. Morever, when at least AOC option or mini ACARS option is activated, the transmission of broadcast data to ATSU is activated.
B. ATC functions Through the ATC function, the FM is able to communicate with the ATSU and to support FMS part of ATC datalink applications. The ATC function is enabled when both OPC FANS A option and AOC option are activated.
C. Printer
Two kinds of ACARS information can be printed:
-FMGC-generated information: flight plan initialization, takeoff data, wind data and flight reports
-ACARS-generated information: flight plan initialization, takeoff data,
wind data.
These reports are described in Para 2-B.
2. System Description
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A. ACARS Functions
(1) General description
The different ACARS functions are:
-flight plan initialization data An uplink message answering a manual request, or automatically sent by the ground. The crew may send a request for flight plan data to the ground indicating the flight number and/or the company route. In response to this request, or automatically, the ground sends a flight plan and associated performance data to the aircraft.
-takeoff data An uplink message answering a manual request, or automatically sent by the ground. The crew may send a request for takeoff data to the ground relative to up to 2 runways indicating the takeoff conditions on these runways (configuration, wind, contamination). In response to this request, or automatically, the ground sends the takeoff speeds associated with up to 4 runways and the takeoff conditions which have been taken into account to elaborate these takeoff speeds.
-wind data An uplink message answering a manual request, or automatically sent by the ground. The crew may send a request for wind data to the ground. In response to this request, or automatically, the ground sends climb, cruise, descent and alternate wind data to the aircraft.
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