30 Questions
What is the primary function of the Central Maintenance Computer (CMC) in the Central Maintenance System?
To acquire and process data from the BITE memories
What mode is available only on the ground in the Central Maintenance System?
Menu Mode
What is the purpose of the Multipurpose Control and Display Units (MCDUs)?
To control the interrelated systems and display output messages
What type of data is memorised by the system computers and CMCs in Normal Mode?
Fault data or operational BITE
What is the purpose of the Central Maintenance System (CMS)?
To provide a centralised location for aircraft fault information
In which mode does the CMS record fault messages generated by the Flight Warning Computers (FWC)?
Normal Mode
What is the primary function of the Central Maintenance Computer (CMC)?
To correlate fault messages with aircraft parameters
What type of warnings are transmitted to the Central Maintenance Computer (CMC)?
Only primary and independent warnings
What is stored in the Central Maintenance Computer (CMC) memory?
Maintenance data for retrieval
What report is generated by the Central Processing Unit (CPU) of the CMC?
Post-flight Report
What information is included in the data stored in the CMC?
Leg heading, date, flight number, city pair from, start time and A/C identification
What is the purpose of the Previous Flight Report (PFR) generated by the CMC?
To store all ECAM and failure messages recorded during the previous 63 flight legs
What type of buses ensure interconnection between the data loader and each computer in an aircraft?
ARINC buses
What is the name of the portable data loader that supplies the airplane with ARINC data buses for loading?
PDL
What is the primary function of the LoadStar software in the PMAT?
To configure loadable software on each aircraft type and tail number
What is the name of the on-board data loader on later-generation Boeing aircraft?
MAT
What is the primary function of the Windows NT operating system in the PMAT?
To support miscellaneous applications
What is the name of the aircraft operating system that supports the on-board maintenance system in the PMAT?
Aircraft OS
What is a key difference between Class 1 and Class 2 EFBs compared to Class 3 EFBs?
They can accommodate moving-map software
What is the purpose of the Display Unit (DU) in the EFB system?
To operate as a computer monitor and input device
How do the captain’s EFB system and the first officer’s EFB system differ in a Class 3 system?
They are independent from each other
What is an optional feature of the EFB system?
All of the above
What is a way the flight crew can interact with the EFB via the DU?
All of the above
What is the primary tool used to select and update system software in the Boeing 777 aircraft?
Cursor Control Device (CCD) of the Maintenance Access Terminal (MAT)
What is a key benefit of the EFB system?
It enhances the quality of information available to the crew
What is the consequence of a software mismatch or incorrect loading procedures in aircraft operations?
A disastrous sequence of events
When can software uploads be performed in aircraft operations?
Only on the ground
What initializes the downloading of data in the aircraft system?
MDDU or MCDU
What happens after the computer acknowledges the request from the MCDU for data downloading?
The data is sorted into files
Why is it essential to follow maintenance manuals and perform software and system functional and confidence checks?
To avoid software mismatches or glitches
This quiz covers the central maintenance system and its components, including the central maintenance computer and multipurpose control and display units. It also touches on aeroplane aerodynamics, structures, and systems.
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