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PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
5-9
Engine Instrument and Crew Alerting System (EICAS)
FAN (N
1
) SPEED DISPLAY
D
N
1
Analog Scale
-- The fan arc is white. The ranges are listed in
table 5--1.
Color
Lower Limit
(%RPM)
Upper Limit
(%RPM)
White
0
100.0
Red
100.1
110.0
N
1
Analog Scale
Table 5--1
When the analog pointer enters the red range, the normally white
pointer and digital fan readout turn red.
D
Fan Digital Display
-- Displays digital readout of fan (N
1
) RPM as
a percent of rotation speed. Display values range from 0 to 110% in
0.1% increments.
NOTE:
The digital readout can indicate as high as 199.9% N
1
.
D
N
1
Request Bug
-- The N
1
request bug is displayed as a solid green
triangle. The bug indicates the throttle position as set by the pilot.
D
FADEC N
1
Bug and Digital Target
-- The FADEC N
1
bug and digital
target are shown as a cyan T--shaped symbol that indicates the
thrust target for the phase of flight, as determined by the FADEC.
D
FADEC Mode Annunciations
-- The FADEC modes, that are
determined by the throttle position, are annunciated in cyan.
Normally, a single annunciation is supplied at the top of the engine
display. The modes are described in table 5--2.