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-flight reports An automatic or manual downlink message. A position or a progress report gives information on the aircraft actual position or progress and can be sent manually or automatically upon ground request or preselected trigger conditions. A flight plan or performance data report gives active route information and can be sent manually or automatically upon ground request.
-broadcast data A set of data permanently transmitted by the FM to the ATSU giving information on aircraft actual attitude and situation relative to the flight plan
All the uplink data messages can be automatically printed based on the customer option in the AMI data base (AOC policy file).
(2) Flight plan initialization The flight plan initialization function allows the request and reception of lateral and vertical flight plan data as well as related Performance data from a ground based station. The crew may manually send a request for flight plan initialization data to a ground station indicating a Company Route or Flight Number. In response to this request, the ground station may send a flight plan and associated performance data to the aircraft. Additionally, the ground station may send a flight plan and performance data automatically to the aircraft without a previous solicitation. Flight plan initialization uplinks most commonly is performed when the aircraft is on the ground. For a manually-initiated flight plan initialization request, designated messages are 'downlinked' to the ground station requesting flight plan information and performance data. In response, the ground station 'uplinks' the appropriate flight plan information and performance data messages to the aircraft. Upon reception and validation of the uplinked messages, the flight plan information and performance data are extracted from the messages and utilized by the FM. When flight plan initialization data is uplinked, it is inserted either automatically (if no active secondary flight plan exists and if automatic insertion is enabled) or after manual approval, into either the active or secondary flight plan routes. It is not possible to directly preview the data prior to insertion. The uplinked flight plan initialization information may concern either the Active or the Secondary flight plan. Additionally, Alternate flight plan data can be received in association with Active or Secondary flight plan data. Active, Active Alternate, Secondary and Secondary Alternate flight plan data can be described as a company route, a random flight plan or a combination of the two. (A random flight plan is an ATC-language described flight plan). (Ref. Fig. 001, 002, 003, 004)
ACARS Flight Plan Initialization - MCDU Operation
Nav Data Base Company Route Entries
Figure 001
ACARS Flight Initialization - MCDU Operation
Downlink Request Initialization
Figure 002
ACARS Flight Plan Initialization - MCDU Operation
Flight Plan Uplink Received After Engine Start
Figure 003
ACARS F-PLN MCDU Mechanisation - Flight Plan Uplink Received in Flight
Figure 004
(3) Takeoff data The takeoff data function allows the request of load information data for up to 2 runways and the reception of load information data generated by the airline ground based station for up to 4 runways. The crew may manually send a request for takeoff data to a ground station indicating the departure airport and runway idents, takeoff center of gravity, gross weight and environmental conditions (baro setting, runway wind and contamination and temperature). In response, the ground sends takeoff speeds (V1, Vr, V2) for up to 4 runways. This data may apply to runways different from the ones for which the request was performed. Uplinked takeoff data may be inserted in the system only for the runway defined in the active flight plan. Additionally, the ground may send these velocities and related data automatically without a previous solicitation. For each uplinked runway, takeoff speeds are computed for max takeoff conditions, for flexible takeoff conditions or optionally for the derated takeoff conditions (when DRT TO option is selected). Two MDCU pages are used by this function:
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the UPLINK TO DATA REQ page which allows the crew to specify and send a request to the ground
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the UPLINK XXX TO DATA page which displays takeoff speeds and parameters received from the ground for pilot review before insertion into the FM. There are two sets of ACARS TAKEOFF pages: one for MAX takeoff (XXX = MAX), one for FLEX takeoff (XXX = FLX), or DERATED takeoff (XXX = DRT) when the option is activated (OPC option).
(Ref. Fig. 005, 006, 007, 008)
MCDU - Takeoff Data
Figure 005
UPLINK TO DATA REQ Page (with Default Values)
Figure 006
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本文链接地址：A320飞机维护手册 AMM AUTO FLIGHT 自动飞行4(67)
