11.18 Flashcards
What does the On board maintenance system ( OBMS ) monitor and record ?
Status if systems
( stores faults )
Can the OBMS send fault data to the ground when in flight ?
Yes
Whats the primary function of a centra maintenance system ( CMS ) ?
Monitors fault status of aircraft systems
Generate fault reports from previous flights
Software updates
What does a Central maintenance system ( CMS ) consist of ?
One or two central maintenance computers ( CMC )
Two or three MCDUs
What does the central maintenance computer ( CMC ) input ?
System fault monitoring
System operating modes
Flight modes
Commands from flight crew and engineers
What does the “ cross talk “ between both CMCs enable ?
For both computers to share and monitor faults within each CMC Incase of a failure within one
Whats the 5 failure fault codes ?
—hard failure
—soft failure
—failure warning
—maintenance messages
—maintenance memos
When do you carry a BITE test ?
When aircraft is on
Whats a hard and soft failure ?
Hard — performance change
Soft — doesn’t change performance
Whats a failure warning ?
Provides indications where built in test detects a fault
When does the first leg start with the aircraft ?
When its on ground and engines start
What’s a maintenance access terminal ?
Allow maintenance staff to access maintenance data to perform tests
Whats the difference between system level BITE and multi - system level BITE ?
System level BITE - works for specific system
Multi - system BITE - works with all systems
When can an engineer interact with the CMC ?
When the aircraft is in interactive mode
What is a data loading system used for ?
Updating software and database or to retrieve aircraft system data
Whats the 4 ways of loading data onto an aircraft ?
-disc
-pen drive
-Airport network
-maintenance laptop
Whats the two modes a disc drive operated in ?
Automatic
Manual
Whats the manual mode on a disc drive unit used for ?
ONLY download data
Whats the automatic mode used for on a disc drive unit ?
To both view and download data
What is used to protect the aircraft systems from any corrupt network server systems ?
Fire wall
Should the software being updated or downloaded be approved ?
Yes, it should also be carried out from a trained and approved engineer
Whats sound on electronic library systems ?
All aircraft manuals and service bulletins
Whats an electronic flight bag ?
Electronic information management device which helps flight crews perform flight management tasks more easily.
( gets rid of paper )
When will you get a fault light on the onboard printer ?
Our of paper
Self test fail
Front door is opened
Whats damage tolerance ?
Ability of aircraft’s structure to have damage without catastrophic failure
Whats intelligent skin ?
Allows you to monitor skin expansion and compressing
