787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Engines, APU -
Engine System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 7.20.3
• a secondary engine parameter is exceeded
• engine N2 RPM is below idle in flight
• a start selector is in the START position
When secondary engine parameters are automatically displayed on EICAS due to
any of the above conditions, they cannot be cleared until the condition is no longer
present. After the condition is resolved, the secondary engine parameters can be
cleared by pushing the engine (ENG) display switch.
Display Format
Primary engine indications and the N2 indications are both digital readouts and
round dial/moving pointer indications. The digital readouts display numerical
values while the moving pointers indicate relative value.
[Option – GE engines]
Oil pressure, oil temperature, and vibration indications are both digital readouts
and vertical indication/moving pointers. Fuel flow and oil quantity are digital
readouts only. All digital readouts are enclosed by boxes. The dial and vertical
indications display the normal operating range, caution range, and operating limits
(as applicable).
[Option – RR engines]
Oil pressure, oil temperature, and vibration indications are both digital readouts
and vertical indication/moving pointers. N3, fuel flow, and oil quantity are digital
readouts only. All digital readouts are enclosed by boxes. The dial and vertical
indications display the normal operating range, caution range, and operating limits
(as applicable).
Normal operating range is displayed on a dial or vertical indication in white.
The oil temperature and oil pressure vertical indication have caution ranges
displayed by amber bands. If oil temperature reaches the caution range, the digital
readout, digital readout box, and pointer change color to amber. An indication
changes color back to white when it returns to the normal operating range.
N1, N2, EGT, oil pressure, and oil temperature indications have operating limits
indicated by red lines. If one of these indications reaches the red line, the digital
readout, dial, box, and pointer change color to red for that indication. Oil
temperature and oil pressure indication changes color back to white when it
returns to the normal operating range.
[Option – GE engines]
If an N1, N2, or EGT red line is exceeded, the box enclosing the digital readout
remains red after the exceeded limit returns to the normal range. The red box color
can be canceled to white or recalled to red by pushing the cancel/recall switch on
the display select panel.
August 14, 2009
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