787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Engines, APU -
Controls and Indicators
Copyright © The Boeing Company. See title page for details.
7.10.18 D615Z003-TBC
Engine Vibration Indications
Engine vibration, displayed:
• (white) – normal operating range
• (black numbers on a white background) – high vibration
Identifies the vibration source being displayed.
Displayed (white) – vibration source with the highest vibration:
• N1 rotor vibration
• N2 rotor vibration
[Option – RR engines]
• N3 rotor vibration
• BB (broad band) vibration
If the vibration source BB is displayed, the source is unknown and average
vibration is displayed.
Displayed (white) – indicates engine vibration level.
Displayed (white) – vibration level at which automatic display of secondary
engine indications occurs.
1
Engine Vibration
2
Vibration Source
3
Engine Vibration Pointer
4
Engine Vibration High Band
N
1
VIB
1
N
3
3
.
80.
SECONDARY ENGINE DISPLAY
2
1
4
3
February 13, 2009
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