787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Engines, APU -
Engine System Description
Copyright © The Boeing Company. See title page for details.
7.20.2 D615Z003-TBC
[Option – RR engines]
Both engines are set to operate at the same thrust rating. Replacement engine
thrust rating is increased or decreased to match the thrust rating of the installed
engine configuration. An EGT red line (maximum takeoff EGT limit) difference
between engines may be indicated, but these indications are normal.
Engine Indications
Primary and secondary engine indications are provided only on the EICAS
display. The EICAS is normally displayed on the inboard MFD window of the left
or right inboard display unit. (Refer to Display Selection and Control
in Chapter
10, Section 20, for additional information.)
If engine data is not available, the associated engine indication blanks. There is no
EICAS message relating to the loss of engine data.
Primary Engine Indications
[Option – GE engines]
N1 and EGT are the primary engine indications. The primary engine indications
are displayed full-time on the EICAS display.
[Option – RR engines]
TPR, N1, and EGT are the primary engine indications. The primary engine
indications are displayed full-time on the EICAS display.
Secondary Engine Indications
[Option – GE engines]
The secondary engine indications are:
[Option – RR engines]
The secondary engine indications are:
Secondary engine indications are displayed on EICAS below the primary engine
indications. The secondary engine indications can be displayed by pushing either
secondary engine display switch (ENG on the display select panel). The secondary
engine indications are automatically displayed when:
• the displays initially receive electrical power
• a FUEL CONTROL switch is moved to CUTOFF in flight
• an engine fire switch is pulled in flight
• N2
• fuel flow
• oil pressure
• oil temperature
• oil quantity
• engine vibration
• N2
• N3
• fuel flow
• oil pressure
• oil temperature
• oil quantity
• engine vibration
August 14, 2009
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