11.18 Flashcards
What happens if the CMC has two identical and the normal CMC fails during flight?
The second CMC takes over automatically and all functions are kept.
Example sentence: If the normal CMC fails, the second CMC will automatically take over.
How can you see from the multifunction control and display unit if a printer is available for use?
There is an asterisk next to the PRINT message on the display.
Example sentence: Look for the asterisk next to the PRINT message to check if a printer is available.
If the SEND function selected on the multifunction control and display unit, what does this mean?
The selected information is sent to the home base station via the data link.
Example sentence: Selecting the SEND function will send the information to the home base station.
Which backup is available in the event of a failure in a central maintenance computer (CMC) normal channel?
The CMC backup channel is available in interactive mode only.
Example sentence: In case of a failure, the CMC backup channel can be used in interactive mode.
Which statement is true regarding the operating modes in the central maintenance computer?
Interactive mode is only available on the ground.
Example sentence: Interactive mode can only be accessed while the aircraft is on the ground.
What is the main purpose of the CMCS in interactive mode?
It is used only on the ground, mainly for systems tests.
Example sentence: Interactive mode is primarily used for conducting systems tests while the aircraft is on the ground.
Which is the main function or are the main functions of a system BITE?
It detects failures and to perform tests on the ground.
Example sentence: The main functions of a system BITE are to detect failures and conduct tests while the aircraft is on the ground.
Which is the function of the reporting mode within the CMC?
To scan the aircraft systems that are connected to it and to memorise and transmit fault information.
Example sentence: The reporting mode in the CMC is used to scan and transmit fault information from connected aircraft systems.
What does MCDU FAIL annunciator indicate, that is important to the CMC?
It shows the MCDU is defective.
Example sentence: The MCDU FAIL annunciator indicates that there is an issue with the MCDU which is important for the CMC.
How is the maintenance menu selected on the MCDU?
By pressing the CMC key on the MCDU.
Example sentence: Press the CMC key on the MCDU to access the maintenance menu.
Which is the disadvantage of older generation aircraft maintenance system?
The associated switches were in varied locations.
Example sentence: Older generation aircraft maintenance systems had switches located in different and varied locations.
When is the MCDU mainly used?
During flight and control the FMS.
Example sentence: The MCDU is mainly used during flight to input and modify flight management system (FMS) data.
Which information is checked during correlation?
Time, date, ATA chapter, and sub chapter.
Additional information: Correlation involves cross-referencing different pieces of information to ensure accuracy.
How are faults recorded with the reporting mode selected and when on the ground?
They are listed on the MCDU or ground report printout.
No additional information.
Which display indication do you get on the MCDU after an output test?
No displayed test results. The operator decides on whether it passes or fails.
No example sentence.
How often should the FMS navigation database be updated?
Every 28 days.
No additional information.
Which are the two types of failure category?
Hard and intermittent failure.
No additional information.
What is loaded into the FMC every 28 days?
Navigation database.
No additional information.
What happens if the CMS has two identical CMC’s and the normal CMC fails during flight?
The second CMC takes over automatically and all functions are kept.
No additional information.
