analog pointer and the digital display change
to red when the pointer reaches the red tick.
When the pointer enters the red range the red
arc (tick) doubles in size and the highest part
of the red arc represents 110%. See Table 7-1.
A N1 reference bug (magenta) is positioned on
each N1 analog scale by the corresponding
DEEC. A digital readout of the reference is dis-
played below and slightly right of the N1 dig-
ital readout. The N1 reference bug represents
the target rpm the DEEC has computed for
existing configuration and ambient condi-
tions. If the thrust levers are placed in the T/O
detent, for example, the DEECs will schedule
fuel flow and accelerate the engine to the point
at which each N1 rpm matches the N1 bug
reference. The N1 bug positions for the two en-
gines should match within 1%.
The DEEC changes the bug and digital read-
out to the appropriate value for the conditions
plus or minus N1 compensation. When the
airplane is on the ground or in flight with the
flaps or gear down, the DEEC will set the bug
reference at takeoff power (T/O) for ambient
LEARJET 45 PILOT TRAINING MANUAL
7-8
FOR TRAINING PURPOSES ONLY
FlightSafety
international
Figure 7-6. EICAS Engine Instrument Display Format
NOTE: LABELS ARE CYAN AND DO NOT CHANGE COLOR.
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