30 Questions
What is the primary function of the Central Maintenance Computer (CMC)?
To acquire and process data from BITE memories
What are the two modes of operation of the Central Maintenance System?
Normal and menu mode
What can be initiated via the MCDU in menu mode?
Self-tests and troubleshooting
What type of data is memorized by the system computers and CMCs?
Fault data and operational BITE
What is the purpose of the Multipurpose Control and Display Units (MCDUs)?
To control and display output messages from systems
In which mode is the CMS available for self-tests and troubleshooting?
Menu mode
What happens when a discrete input is permitted in a Type 3 system?
The test is initialised or reset.
Where do aircraft systems send their BITE information?
In parallel to both Central Maintenance Computers
What is the function of the Multifunction Control Display Unit?
To provide access to data from the CMC system
What are self-tests used for in conjunction with the Aircraft Maintenance Manual (AMM)?
For LRU removal/installation checks
How do operators access the CMC functions?
Through the CMS menu of the MCDU
What is stored in the non-volatile memories of the CMC?
Data concerning all the aircraft systems
What is the primary purpose of the Aircraft Communication Addressing and Reporting System (ACARS)?
To send maintenance information from the aircraft to the destination station in advance
What is the function of a data loader in an aircraft?
To load and update software in avionics systems
What is the benefit of integrating the CMC with ACARS?
Faster troubleshooting and analysis by maintenance personnel
What is the typical connection method for a data loader?
Link to the Flight Management System (FMS) or connection to a data bus coupler
What type of data can be downloaded from an aircraft using a data loader?
Data recorded by on-board computers during aircraft operation
What is the purpose of the CMC in an aircraft?
To integrate with various communication systems, such as ACARS and SATCOM
What is displayed on the data loader LCD during the transfer?
TRANSFER IN PROG
What type of media did older data loaders typically use?
3.5-inch disk and CD-ROM
What is the typical number of paper pages of integrated text and graphics that an airliner usually comes with?
50 000
How is software loaded into the target hardware?
Using a Portable Data Loader (PDL) or Airborne Data Loader (ADL)
What should be recorded after loading Field Loadable Software (FLS)?
The loading of FLS in the Aircraft Configuration List (ACL)
What type of documents are used for operational requirements in an airliner?
Taxi diagrams, ops manual, and minimum equipment lists
What is required after loading a Loadable Software Aircraft Part (LSAP)?
A Certificate of Release to Service
What is the name of the paperless cockpit concept that replaces traditional paper-based documentation?
Electronic Flight Bag
What type of data is typically stored in the Cabin Management Tools?
Checklists and special passenger needs
Where should a copy of the loaded FLS be kept?
On-board the aircraft and in the operator's maintenance records system
What is the main purpose of the Maintenance Applications in an airliner?
To provide maintenance information and support
What is typically subdivided into Operational Requirements, Maintenance Applications, and Cabin Management Tools?
Electronic Library System
This quiz covers the central maintenance system, its components, and their functions in aircraft maintenance. It includes the central maintenance computer, multipurpose control and display units, and their roles in acquisition and processing of data.
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