PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
5-11
Engine Instrument and Crew Alerting System (EICAS)
INTERSTAGE TURBINE TEMPERATURE (ITT) DISPLAY
D
ITT Analog Scale
-- The scale listed in table 5--3, is color banded,
as to indicate normal and parameter exceedance ranges.
Operating Condition
Color
Lower
Limit
Upper
Limit
All modes except
ALT--T/O
White
0
_
C
921
_
C
ALT--T/O
Red
922
_
C
1000
_
C
NOTES:
1. Color ranges change for engine start and CON, the CLB, and
CRZ conditions.
CRZ conditions.
2. ALT--T/O modes have different ITT limits.
ITT Limits
Table 5--3
The scale ranges from 0 to 1000
_
C. The scale from 800 to 1000
_
C
is twice the rest of the range.
In the red range, the pointer and digital display change color.
A red tick mark, indicates the beginning of the red range.
D
ITT Digital Display
-- Ranges from 0 to 1000
_
C in 1.0
_
C
increments.
ENGINE IGNITION (IGN) ANNUNCIATION
Each engine’s dual ignitors are monitored for activation. The
annunciation color relates to ignitor status as listed in table 5--4.
Number of Operating
Ignitors
IGN Annunciation
Color
2
Green
0
Amber
Ignitor Annunciation Color Definition
Table 5--4
The annunciation can be A, B or AB, depending on the selection by the
FADEC. The annunciation can also be OFF.
