5.15 Flashcards
What does ACARS stand for?
Aircraft Communication Addressing and Reporting System
What is the ACARS?
it is a data link communication system that exchanges messages and data between the aircraft and the ground.
What band is used for the exchange of messages and data between the aircraft and ground in regards to ACARS?
Very high frequency band (VHF)
What is an uplink?
Data transfers from the ground to the aircraft is called the uplink
What is the downlink?
Data transfers from the aircraft to the ground
Downlink messages from the aircraft can consist of what?
Position updates
Weather data requests
Details of aircraft system faults.
Uplink messages from the ground network can consist of what?
Weather data
Flight plan
Information for the flight crew
What VHF does the ACARS use and at what frequency?
VHF 3 communications system on a frequency of 131.55 MHz
ACARS transmits and receives either automatic reports (which are independent of the flight profile) or manual reports (which usually depend on the flight profile), true or false
False, ACARS transmits and receives either automatic reports (which usually depend on the flight profile) or manual reports (which are independent of the flight profile)
What are the two modes ACARS operates in?
Demand mode
Polled mode
What are the ACARS components?
ACARS Management Unit (MU)
Multi-Purpose Interactive Display Unit (MPIDU)
Ident plug
Program pins
Thermal printer
How is a failure enunciated on the ACARS Management Unit?
a red ‘’MU FAIL’’ or ‘‘Control Unit FAIL’’ indication.
What does EICAS stand for?
Engine Indicating and Crew Alerting System
What does ECAM stand for?
Electronic Centralized Aircraft Monitoring
The basic EICAS system comprises……
two display units, a control panel, and two computers.
What are the three modes of displaying information?
Operational (selected by the flight crew)
Status (selected by the flight crew)
Maintenance (ground use only and selected via the maintenance panel)
What is the advantage of fly by wire systems?
Reduced mechanical connections
Weight savings
More reliable
Better ability to mitigate dangers
Bite test failure
Each computer within the fly by wire system has its own specific function, True or false?
True
