Aeroplane On-Board Maintenance Systems Introduction

What is the primary purpose of the On-Board Maintenance System (OMS)?

To enhance passenger comfort
To reduce aircraft weight
To assist in fault-finding of complex avionics systems (correct)
To improve aircraft aerodynamics

What is the benefit of using the On-Board Maintenance System (OMS) in aircraft maintenance?

Minimised ground time and increased efficiency of maintenance processes (correct)
Improved aircraft performance
Increased ground time
Reduced maintenance costs

Which of the following is NOT a component of the On-Board Maintenance System (OMS)?

Central Maintenance System (CMS)
Data loading system
Flight control system (correct)
Electronic library system

What is the function of the Central Maintenance Computers (CMC) in the Central Maintenance System (CMS)?

To extract maintenance data concerning aircraft systems (B) Signup and view all the answers

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 (B) Signup and view all the answers

What activities are supported by the On-Board Maintenance System (OMS)?

Aircraft maintenance, engineering follow-up, and aircraft reconfiguration (C) Signup and view all the answers

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. (C) Signup and view all the answers

What is the primary function of the two CMCs in a large modern commercial aircraft?

To provide redundancy in case of failure. (D) Signup and view all the answers

What is displayed on the data loader LCD during the transfer process?

TRANSFER IN PROG (B) Signup and view all the answers

What happens when the CMC 1 fails due to a BITE fault?

The CMC 2 becomes active and considered the master. (C) Signup and view all the answers

What is the primary purpose of a Portable Data Loader (PDL) or an Airborne Data Loader (ADL)?

To load software into the target hardware (D) Signup and view all the answers

How can the CMC be switched in a cockpit?

Through a pushbutton switch in the cockpit overhead panel. (C) Signup and view all the answers

What is typically done after loading a Loadable Software Aircraft Part (LSAP)?

A Certificate of Release to Service is issued (C) Signup and view all the answers

What is the minimum storage capacity of a CD-ROM used in older data loaders?

700+ MB (A) Signup and view all the answers

What is the result of a CMC BITE failure?

A failure indication is displayed on the MCDU and printer. (B) Signup and view all the answers

What is the purpose of the Management Unit (MU) in the ACARS?

To send failure details to the main base. (D) Signup and view all the answers

Where is a copy of the loaded software typically kept?

All of the above (D) Signup and view all the answers

What is the purpose of verifying the software on-board after loading?

To follow established processes and procedures (D) Signup and view all the answers

What is the estimated number of paper pages in an airliner's integrated text and graphics?

50 000 (B) Signup and view all the answers

Which of the following is NOT a type of document used for operational requirements?

Cabin maintenance log books (C) Signup and view all the answers

What is the main purpose of the electronic library system?

To provide a centralized repository for operations, training, and maintenance data (B) Signup and view all the answers

What is another name for the paperless cockpit concept?

Electronic Flight Bag (D) Signup and view all the answers

What type of information is included in maintenance applications?

Maintenance log, illustrated parts list, and fault isolation data (A) Signup and view all the answers

Which of the following is NOT a subcategory of the electronic library system?

Pilot training (D) Signup and view all the answers

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 (C) 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 (D) 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 (A) Signup and view all the answers

What is a feature of certain EFB applications?

Touch-screen capability (C) Signup and view all the answers

What is the purpose of the Cursor Control Device (CCD) in the EFB system?

To interact with the EFB via the DU (C) Signup and view all the answers

What is a unique feature of the captain's EFB system compared to the first officer's EFB system?

They are independent (B) Signup and view all the answers