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Questions and Answers
In the event of a computer failure, SFCC2 will not be operational.
In the event of a computer failure, SFCC2 will not be operational.
True
To access the system menu, GROUND TEST needs to be selected from the CMC menu.
To access the system menu, GROUND TEST needs to be selected from the CMC menu.
True
The type 2 menu is utilized by more complex systems and offers a wide range of menu options.
The type 2 menu is utilized by more complex systems and offers a wide range of menu options.
False
Ground Test menu allows for testing of 4 menu options.
Ground Test menu allows for testing of 4 menu options.
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The interactive mode function called 'system report and test menu' can be displayed in one of two possible layouts.
The interactive mode function called 'system report and test menu' can be displayed in one of two possible layouts.
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All selectable items on the menus can be grouped into only one interactive mode function.
All selectable items on the menus can be grouped into only one interactive mode function.
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The Boeing CMC menu provides data retrieval functions via three menu options.
The Boeing CMC menu provides data retrieval functions via three menu options.
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The skin temp sensor message on the last leg/gnd report indicates that the sensor is functioning normally.
The skin temp sensor message on the last leg/gnd report indicates that the sensor is functioning normally.
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The EICAS maintenance pages are accessed through the upper display unit of the EICAS system.
The EICAS maintenance pages are accessed through the upper display unit of the EICAS system.
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Two of the menu options under the Type 2 system menu are data retrieval items.
Two of the menu options under the Type 2 system menu are data retrieval items.
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Boeing CMC's interactive mode functions are directly selected from the CMC main menu.
Boeing CMC's interactive mode functions are directly selected from the CMC main menu.
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The system selection in Boeing's EICAS Maintenance Pages always precedes the function selection.
The system selection in Boeing's EICAS Maintenance Pages always precedes the function selection.
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The CMC menu item 'Other functions' contains SHOP FAULTS information and INPUT MONITORING data.
The CMC menu item 'Other functions' contains SHOP FAULTS information and INPUT MONITORING data.
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The CMCS TESTS on a CMC have the main purpose of confirming that LRUs are faulty.
The CMCS TESTS on a CMC have the main purpose of confirming that LRUs are faulty.
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Airbus CMC system offers up to two different tests, including Output test and System test.
Airbus CMC system offers up to two different tests, including Output test and System test.
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Ground tests for all major systems are available in both Boeing and Airbus CMC systems.
Ground tests for all major systems are available in both Boeing and Airbus CMC systems.
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Confidence tests in CMC systems are mainly used for preflight checks and are comparable to the Airbus output tests.
Confidence tests in CMC systems are mainly used for preflight checks and are comparable to the Airbus output tests.
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During a CMC test, the display shows the message: 'Test in progress' while the Bite controls necessary test steps.
During a CMC test, the display shows the message: 'Test in progress' while the Bite controls necessary test steps.
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Study Notes
CMC Interactive Mode Function Selection Menu
- Select SFCC1 to get the interactive mode function menu, which includes the SYSTEM REPORT/TEST menu for SFCC1-FLAP Flap Menu.
- The system menu presents all available systems for a ground test, ordered by ATA chapter.
System Menu
- The system menu has 6 pages, which can be accessed using the page control push buttons.
- The menu allows selection of required systems for ground testing.
- There are 4 menu options for ground test selection.
Menu Layouts
- There are three possible menu layouts, depending on the selected system.
- Type 1 menu: most widely used, with a wide range of menu options.
- Type 2 menu: used by less complex systems, with only 3 menu options.
- Type 3 menu: used by a few parts of the electrical system, with only 1 menu option.
Interactive Mode Functions
- Interactive mode functions include test functions and data retrieval functions.
- Test functions are used to confirm failure or repair success.
- Data retrieval functions provide additional trouble-shooting information.
Boeing CMC Menu
- The Boeing CMC menu provides direct selection of interactive mode functions.
- There are two types of test functions and two data retrieval functions.
- Data retrieval functions provide additional trouble-shooting information via two menu options:
- EICAS maintenance pages (from page 1)
- Other functions option (on page 2)
EICAS Maintenance Pages
- The EICAS maintenance pages use the lower display unit of the EICAS (Engine Indicating and Crew Alerting System).
- Function selection is always followed by system selection.
Additional Data Retrieval Functions
- Hidden behind the CMC menu item "other functions" are:
- SHOP FAULTS information for workshop people
- INPUT MONITORING information about system input data in coded format
- Configuration data about the computer program version
CMCS Tests
- Two main purposes of CMCS tests:
- Confirm that the LRU (Line Replaceable Unit) is really faulty
- Ensure that a repair or component removal solved the problem
Airbus CMC System
- Up to three different tests are available:
- System test (available in all systems)
- Complementary test (available in certain systems)
- Output test (available in certain systems)
Boeing CMC System
- Two different types of tests are available:
- Ground tests (available for all major systems)
- Confidence tests (available for only a few systems, used mainly for pre-flight checks)
Studying That Suits You
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Description
Test your knowledge of troubleshooting aircraft computer systems with this quiz. Questions cover topics such as system menus, interactive mode functions, and ATA chapter ordering.
