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advisory. Prioritization is an aid to flight crew decision making when more than
one EICAS alert message is displayed.
EICAS warning messages are displayed red and EICAS caution and advisory
messages are displayed amber. Red EICAS alert messages remain displayed and
cannot be canceled by pushing the CANC switch. Amber EICAS alert messages
can be canceled by pushing the CANC switch and recalled by pushing the RCL
switch.
EICAS Memo Messages
EICAS memo messages are crew reminders of certain flight crew selected normal
conditions. They display in white at the bottom of the last page of EICAS alert
messages on the primary EICAS display.
Pushing the CANC switch when the last page of EICAS alert messages is
displayed ensures all current memo messages have been displayed.
EICAS Status Messages
All EICAS status messages are listed in the Dispatch Deviation Guide (DDG) or
airline equivalent and provide a cross reference to the Minimum Equipment List
(MEL) for dispatch capability.
Display and Manipulation of EICAS Messages
If more than one EICAS alert message is displayed, the messages are displayed in
a list which is grouped by priority level. EICAS warning messages are displayed
in red at the top of the message list.
EICAS caution messages are displayed in amber below the lowest warning
message. EICAS advisory messages are displayed in amber below the lowest
cautionmessage and are indented one character so they may be distinguished from
EICAS caution messages.
The most recent EICAS alert message is displayed at the top of its priority group
and all messages move down one display line. If a message is no longer displayed
because the respective system non-normal condition no longer exists, allmessages
previously displayed move up one display line.
April 01, 2001
747 Operations Manual
Warning Systems -
System Description
Copyright © The Boeing Company. See title page for details.
D6-30151-425 15.20.3
If there are more messages in the list than can be displayed on one page, multiple
pages are created and numbered sequentially. The page number is normally
displayed at the bottom of each list. Multiple pages of EICAS caution and
advisory messages can be displayed one page at a time by pushing the CANC
switch. If there are more EICAS warning messages in the list than can be
displayed on one page, no page number is displayed and it is not possible to
display other pages. In all other cases, pushing the CANC switch displays the next
page of EICAS caution and advisory messages. EICAS warning messages are
displayed at the top of each page.
Pushing the CANC switch when the last page of the list is displayed causes all
EICAS caution and advisory messages to be no longer displayed.
EICAS alert messages for new system non-normal conditions are displayed on the
page being viewed.
For example, if page three is displayed and an EICAS caution message is
displayed because a new system non-normal occurs, the message is displayed
immediately below any EICAS warning messages. If the RCL switch is
subsequently pushed to redisplay page one, the message is displayed as the first
EICAS caution message on page one.
When no EICAS caution or advisory messages are displayed, pushing the RCL
switch redisplays page one of the EICAS caution and advisory messages for all
system non-normal conditions and the RECALL message is displayed briefly.
The most recent EICAS communication message is displayed at the top of its
priority group and all messages move down one display line. If a message is no
longer displayed because the respective communication condition no longer
exists, all messages previously displayed move up one display line.
The most recent EICAS memo message is displayed at the bottom of the memo
messages.
The STATUS cue is displayed on primary EICAS when a new EICAS status
message is displayed. When the STAT switch is pushed, the status display is
displayed on the secondary EICAS display. The most recent status message is
displayed at the top of the message list.
The STAT switch controls the display of single and multiple pages of status
messages in a manner similar to the way the CANC and RCL switches control the
display of EICAS alert messages.
April 01, 2001
747 Operations Manual
Copyright © The Boeing Company. See title page for details.
15.20.4 D6-30151-425
Warning Systems -
System Description
Aural Alerts, MasterWARNING/CAUTION Switches and
Lights, andGND PROX Light
Aural alerts, two master WARNING and CAUTION lights, and the GND PROX
light call attention to the following alerts:
• in the following table, parans () describe crew action to silence the aural
　
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