30 Questions
What is the primary purpose of the On-Board Maintenance System (OMS)?
To assist in fault-finding of complex avionics systems
What is the benefit of using the On-Board Maintenance System (OMS) in aircraft maintenance?
Minimised ground time and increased efficiency of maintenance processes
Which of the following is NOT a component of the On-Board Maintenance System (OMS)?
Flight control system
What is the function of the Central Maintenance Computers (CMC) in the Central Maintenance System (CMS)?
To extract maintenance data concerning aircraft systems
What is the purpose of the Multipurpose Control and Display Units (MCDU) in the Central Maintenance System (CMS)?
To display maintenance data and test results
What activities are supported by the On-Board Maintenance System (OMS)?
Aircraft maintenance, engineering follow-up, and aircraft reconfiguration
What happens to the CMC at each leg opening transition?
It updates the 64 last legs filed in the previous flight report and memorises the new leg heading.
What is the primary function of the two CMCs in a large modern commercial aircraft?
To provide redundancy in case of failure.
What is displayed on the data loader LCD during the transfer process?
TRANSFER IN PROG
What happens when the CMC 1 fails due to a BITE fault?
The CMC 2 becomes active and considered the master.
What is the primary purpose of a Portable Data Loader (PDL) or an Airborne Data Loader (ADL)?
To load software into the target hardware
How can the CMC be switched in a cockpit?
Through a pushbutton switch in the cockpit overhead panel.
What is typically done after loading a Loadable Software Aircraft Part (LSAP)?
A Certificate of Release to Service is issued
What is the minimum storage capacity of a CD-ROM used in older data loaders?
700+ MB
What is the result of a CMC BITE failure?
A failure indication is displayed on the MCDU and printer.
What is the purpose of the Management Unit (MU) in the ACARS?
To send failure details to the main base.
Where is a copy of the loaded software typically kept?
All of the above
What is the purpose of verifying the software on-board after loading?
To follow established processes and procedures
What is the estimated number of paper pages in an airliner's integrated text and graphics?
50 000
Which of the following is NOT a type of document used for operational requirements?
Cabin maintenance log books
What is the main purpose of the electronic library system?
To provide a centralized repository for operations, training, and maintenance data
What is another name for the paperless cockpit concept?
Electronic Flight Bag
What type of information is included in maintenance applications?
Maintenance log, illustrated parts list, and fault isolation data
Which of the following is NOT a subcategory of the electronic library system?
Pilot training
What is a key feature of Class 3 EFBs that distinguishes them from Class 1 and Class 2 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
What is a key benefit of the EFB system?
It enhances the quality of information available to the crew
What is a feature of certain EFB applications?
Touch-screen capability
What is the purpose of the Cursor Control Device (CCD) in the EFB system?
To interact with the EFB via the DU
What is a unique feature of the captain's EFB system compared to the first officer's EFB system?
They are independent
This quiz introduces the On-Board Maintenance System (OMS) used in aircraft to assist maintenance personnel in fault-finding complex avionics systems. OMS is a common framework supporting various aircraft maintenance activities.
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