11.18

Question 1

What does the On board maintenance system ( OBMS ) monitor and record ?

Answer 1

Status if systems
( stores faults )

Question 2

Can the OBMS send fault data to the ground when in flight ?

Answer 2

Yes

Question 3

Whats the primary function of a centra maintenance system ( CMS ) ?

Answer 3

Monitors fault status of aircraft systems

Generate fault reports from previous flights

Software updates

Question 4

What does a Central maintenance system ( CMS ) consist of ?

Answer 4

One or two central maintenance computers ( CMC )

Two or three MCDUs

Question 5

What does the central maintenance computer ( CMC ) input ?

Answer 5

System fault monitoring

System operating modes

Flight modes

Commands from flight crew and engineers

Question 6

What does the “ cross talk “ between both CMCs enable ?

Answer 6

For both computers to share and monitor faults within each CMC Incase of a failure within one

Question 7

Whats the 5 failure fault codes ?

Answer 7

—hard failure
—soft failure
—failure warning
—maintenance messages
—maintenance memos

Question 8

When do you carry a BITE test ?

Answer 8

When aircraft is on

Question 9

Whats a hard and soft failure ?

Answer 9

Hard — performance change

Soft — doesn’t change performance

Question 10

Whats a failure warning ?

Answer 10

Provides indications where built in test detects a fault

Question 11

When does the first leg start with the aircraft ?

Answer 11

When its on ground and engines start

Question 12

What’s a maintenance access terminal ?

Answer 12

Allow maintenance staff to access maintenance data to perform tests

Question 13

Whats the difference between system level BITE and multi - system level BITE ?

Answer 13

System level BITE - works for specific system

Multi - system BITE - works with all systems

Question 14

When can an engineer interact with the CMC ?

Answer 14

When the aircraft is in interactive mode

Question 15

What is a data loading system used for ?

Answer 15

Updating software and database or to retrieve aircraft system data

Question 16

Whats the 4 ways of loading data onto an aircraft ?

Answer 16

-disc
-pen drive
-Airport network
-maintenance laptop

Question 17

Whats the two modes a disc drive operated in ?

Answer 17

Automatic

Manual

Question 18

Whats the manual mode on a disc drive unit used for ?

Answer 18

ONLY download data

Question 19

Whats the automatic mode used for on a disc drive unit ?

Answer 19

To both view and download data

Question 20

What is used to protect the aircraft systems from any corrupt network server systems ?

Answer 20

Fire wall

Question 21

Should the software being updated or downloaded be approved ?

Answer 21

Yes, it should also be carried out from a trained and approved engineer

Question 22

Whats sound on electronic library systems ?

Answer 22

All aircraft manuals and service bulletins

Question 23

Whats an electronic flight bag ?

Answer 23

Electronic information management device which helps flight crews perform flight management tasks more easily.

( gets rid of paper )

Question 24

When will you get a fault light on the onboard printer ?

Answer 24

Our of paper

Self test fail

Front door is opened

Question 25

Whats damage tolerance ?

Answer 25

Ability of aircraft’s structure to have damage without catastrophic failure

Question 26

Whats intelligent skin ?

Answer 26

Allows you to monitor skin expansion and compressing