*
Activity
*
Occurrence field
*
Leg information
*
Recommended maintenance actions
*
Correlated flight deck effects
*
Buttons.
The single maintenance message data display is available from one of these displays:
*
Inbound flight deck effects display
*
Existing flight deck effects display
*
Ground tests display
*
Present leg faults display
*
Existing faults display
*
Maintenance planning displays.
Within these displays, the single maintenance message data display supplies data for a maintenance message summary group from a one of these:
*
FDE summary group
*
Maintenance message summary group
*
Non-FDE summary group.
EFFECTIVITY
BEJ ALL
Title
The title shows the original source of the message and previous display title of the page that showed the maintenance message.
Fault Information
The fault information field shows specific fault data and shows the source of the data.
Maintenance Message Information
The maintenance message number field contains the unique number associated with that specific maintenance message.
FDE, Maintenance Message, or Maintenance Memo Activity
The CMCF receives LRU fault information for display on the single maintenance message display that refers to these:
*
FDEs
*
Maintenance messages
*
Maintenance memos. The CMCF stores the information in the fault database.
The condition of an FDE shows as one of these:
*
Active
*
Latched
*
Not Active.
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An active FDE is an FDE that currently shows in the flight deck.
A latched FDE can only be a status message or a scheduled maintenance task. A failure that causes a status message may impact dispatch and may be intermittent or detectable only under certain conditions. The PDS holds a status message to make sure that you can see it on the ground.
An FDE is not active if it can not currently show on the flight deck
The activity of a maintenance message and maintenance memo also shows as one of these:
*
Active
*
Latched
*
Not Active.
A maintenance message or maintenance memo is active if a system can continuously monitor for a fault condition, and the fault exists.
A maintenance message or maintenance memo is latched for one of these reasons:
*
If a system detects a fault and no longer uses the related equipment as part of its operational function
*
To ensure correlation with an FDE (maintenance message only)
*
If a system can not always detect if the fault exists.
You must do something to clear a latched maintenance message.
A maintenance message or maintenance memo is not active if a system can continuously monitor for a fault condition, and the fault does not exist.
Occurrence Field
The occurrence field tells where the fault occurred, the time of the occurrence and the flight phase.
The occurrence field also tells if the fault is one of these:
*
Hard
*
Intermittent
*
Message is ACTIVE only during operational mode shown in FIM.
A fault shows as hard if a system can currently monitor the fault condition, the fault exists, and it has not become not active.
A fault shows intermittent if a system can currently monitor the fault condition and the fault condition has gone away at least once. The fault condition may or may not currently exist. The number of times the fault has become active also appears.
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A fault shows as "Message is ACTIVE only during operational mode shown in FIM" if the system has modes in which it can not tell if the fault is active. Use the initial evaluation paragraph of the fault isolation task in the FIM to see if it is active.
The occurrence field only shows when you select the maintenance message display from the inbound flight deck effects display or the present leg faults display.
*
Inbound flight deck effects display
*
Present leg faults display
*
Fault history display.
Leg Information
The leg field shows information about the message and tells if the message occurred in a previous leg.
Recommended Maintenance Action Field
The recommended maintenance action field shows possible causes for the maintenance message. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：777 AMM 飞机维护手册 中央维护 Central Maintenance(24)
