AND RIGHT ENGINES.
THE PROFILES BEGIN AT THE
930:03.5
890:04.4
EXCEEDENCE VALUE AND INCREASE
850:05.2
AT A PRESET DELTA. THERE ARE
810:06.3
UP TO 11 TEMPERATURES WITH
THE TOP LINE SHOWING THE MAXTEMPERATURE REACHED. THE
770:07.6
730:08.5
ACCUMULATED TIME AT EACH
690:09.1
TEMPERATURE IS ALSO SHOWN.
650:10.4
610:11.3
570 :12.2
EICAS
R EGT AMBER MAX EGT AMBER COMPUTER
EXCEEDANCE PROFILE
840 1:09.5 847825 1:11.2810 1:13.3795 1:15.7
ENGINE EXCEEDANCE DISPLAYS
INDICATES ENGINE
EXCEEDANCE FORMAT
SHOWS MAXIMUM VALUE OF N1, EGT, N2,
AND N3 FOR LEFT AND RIGHT ENGINES.
ALSO SHOWS TOTAL ACCUMULATED TIME
(IN MINUTES AND SECONDS) THAT
EACH PARAMETER WAS IN EXCEEDANCE
RANGE.
EICASENG EXCD PAGE IDENTIFIER
COMPUTER 121.7N1
N1 EXCEEDANCE EICAS
COMPUTER
1:37 865
EGT EGT EXCEEDANCE
:05 114.9N2
N2 EXCEEDANCE
:56107.4N3
N3 EXCEEDANCE
:47
EICAS Display - ENG EXCD Page
Figure 5D
A
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MAINTENANCE MANUAL
EICAS Display - CONF/MCDP Page
Figure 5E
ú
31-41-00
ALL ú ú 31 Page 21 ú Jan 20/98
H08772
A
(b)
(c)
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MAINTENANCE MANUAL
3) The PERF/APU page contains both engine performance (PERF) parameters and Auxiliary Power Unit (APU) parameters. The PERF parameters include all those displayed on the primary and secondary engine pages. They also include additional parameters from the air data system and the FMC.
4) The CONF/MCDP page provides configuration (CONF) data and Maintenance Control Display Panel (MCDP) readouts. The CONF data includes engine configurations for avionics computers, input data bus activity, and EICAS part number and program pins. The MCDP readout provides a flight deck display of the MCDP, but no MCDP controls are provided.
5) The configuration data also includes the EICAS software part numbers (OPS and OPC).
6) The ENG EXC page contains the maximum exceedances of engine parameters. It also displays the accumulated time of the exceedance.
EICAS continuously receives data from many systems for
maintenance purposes. This data is in the form of either
real-time data, or single maintenance message signals. Even
though this data cannot be displayed in flight, it is all still
present for the EICAS computers.
1) Maintenance pages will be displayed, when selected, during primary and secondary engine exceedances. This includes instances when fuel control switches are out of cutoff. Exceedances will be displayed on the top display unit in a full-compacted mode while maintenance messages will be displayed on the bottom display unit.
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