11.18 Flashcards

1
Q

What do modern aircraft have to monitor and record performance and the status of systems?

A

An (OBMS) on board maintenance system

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2
Q

What is the purpose of the OBMS?

A

To identify and store fault data

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3
Q

What is another data type an OBMS stores?

A

Procedural data, troubleshooting data and flight manuals to save the physical copies from being needed to be carried on board

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4
Q

When is fault data accessible?

A

On ground and sometimes in flight

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5
Q

What is the primary function of central maintenance systems?

A

Monitoring fault status, initial fault system tests, generate fault reports and to upload and download software updates

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6
Q

What is in a typical CMS?

A

-One or two central maintenance computers
-Two or three multipurpose control and display units

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7
Q

What is the central maintenance computers purpose?

A

Acquires, processes and outputs data to and from systems

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8
Q

What is cross talk?

A

It enables the CMC’s to share and monitor faults

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9
Q

What is a hard failure?

A

Performance change of the system or failure of an operating systems

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10
Q

What is a soft failure?

A

It does not cause an immediate change to performance

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11
Q

What is the MCDU?

A

Multifunction control display unit it enables personnel to navigate the OBMS

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12
Q

What is provided when a fault is detected by a CMC?

A

The probable cause

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13
Q

How can data be brought onto an aircraft?

A

-disc
-pen drive
-through airport network
-on a maintenance laptop

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14
Q

What are the two modes associated with disc drives?

A

Manual - downloading data only
Automatic - viewing and downloading data

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15
Q

What is the purpose of a multi purpose disc drive unit?

A

Without one uploading and downloading can only be performed through a connector using a portable data loader

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16
Q

How can an upload be carried out?

A

-from the repository to an aircraft computer
-from the dedicated source CD, DVD to the repository
-directly from a CD/DVD to an aircraft computer

17
Q

What is a software repository?

A

A file server, the media is stored on here

18
Q

What is a maintenance access terminal?

A

The access point on aircraft that allows for viewing or changing software

19
Q

What is the electronic library system?

A

Information management system to provide timely access to necessary data

20
Q

What is an electronic flight bags purpose?

A

A reduction in paper usage

21
Q

When will you get a fault LED on a printer?

A

When it’s out of paper, a self test starts and fails or the door is open

22
Q

What is used to measure strain on the air frame?

A

A strain gauge

23
Q

What is the purpose of a fatigue meter?

A

To record overall accumulated stresses measuring all overall accelerometers

24
Q

What is the function of strain gauges?

A

Measuring resistance

25
Q

What is an intelligent skin?

A

Fibre optic sensors embedded in the material connected to signal processing units changes in light are detected