Aeroplane Systems and Maintenance

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What is the primary function of the Central Maintenance Computer (CMC) in the Central Maintenance System?

To control the interrelated systems

To acquire and process data from the BITE memories (correct)

To initiate self-tests in normal mode

To display output messages on the MCDUs

What mode is available only on the ground in the Central Maintenance System?

Self-Test Mode

Normal Mode

Troubleshooting Mode

Menu Mode (correct)

What is the purpose of the Multipurpose Control and Display Units (MCDUs)?

To initiate self-tests in normal mode

To record fault messages generated by the Flight Warning Computers

To memorise fault data in real-time

To control the interrelated systems and display output messages (correct)

What type of data is memorised by the system computers and CMCs in Normal Mode?

Fault data or operational BITE Signup and view all the answers

What is the purpose of the Central Maintenance System (CMS)?

To provide a centralised location for aircraft fault information Signup and view all the answers

In which mode does the CMS record fault messages generated by the Flight Warning Computers (FWC)?

Normal Mode Signup and view all the answers

What is the primary function of the Central Maintenance Computer (CMC)?

To correlate fault messages with aircraft parameters Signup and view all the answers

What type of warnings are transmitted to the Central Maintenance Computer (CMC)?

Only primary and independent warnings Signup and view all the answers

What is stored in the Central Maintenance Computer (CMC) memory?

Maintenance data for retrieval Signup and view all the answers

What report is generated by the Central Processing Unit (CPU) of the CMC?

Post-flight Report Signup and view all the answers

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 Signup and view all the answers

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 Signup and view all the answers

What type of buses ensure interconnection between the data loader and each computer in an aircraft?

ARINC buses Signup and view all the answers

What is the name of the portable data loader that supplies the airplane with ARINC data buses for loading?

PDL Signup and view all the answers

What is the primary function of the LoadStar software in the PMAT?

To configure loadable software on each aircraft type and tail number Signup and view all the answers

What is the name of the on-board data loader on later-generation Boeing aircraft?

MAT Signup and view all the answers

What is the primary function of the Windows NT operating system in the PMAT?

To support miscellaneous applications Signup and view all the answers

What is the name of the aircraft operating system that supports the on-board maintenance system in the PMAT?

Aircraft OS Signup and view all the answers

What is a key difference between Class 1 and Class 2 EFBs compared to Class 3 EFBs?

They can accommodate moving-map software Signup and view all the answers

What is the purpose of the Display Unit (DU) in the EFB system?

To operate as a computer monitor and input device Signup and view all the answers

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 Signup and view all the answers

What is an optional feature of the EFB system?

All of the above Signup and view all the answers

What is a way the flight crew can interact with the EFB via the DU?

All of the above Signup and view all the answers

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) Signup and view all the answers

What is a key benefit of the EFB system?

It enhances the quality of information available to the crew Signup and view all the answers

What is the consequence of a software mismatch or incorrect loading procedures in aircraft operations?

A disastrous sequence of events Signup and view all the answers

When can software uploads be performed in aircraft operations?

Only on the ground Signup and view all the answers

What initializes the downloading of data in the aircraft system?

MDDU or MCDU Signup and view all the answers

What happens after the computer acknowledges the request from the MCDU for data downloading?

The data is sorted into files Signup and view all the answers

Why is it essential to follow maintenance manuals and perform software and system functional and confidence checks?

To avoid software mismatches or glitches Signup and view all the answers