C
IRRUS
D
ESIGN
S
ECTION
2: L
IMITATIONS
SR20
P
OWERPLANT
L
IMITATIONS
P/N 11934-005
2-9
Engine Instrument Markings & Annunciations
The following describes the engine instrument markings.
Powerplant
Instrument
(Range & Units)
Red
Arc/Bar
Yellow
Arc/Bar
Green
Arc/Bar
Yellow
Arc/Bar
Red
Arc/Bar
Lower
Warning
Range
Min.
Caution
Range
Normal
Range
Max.
Caution
Range
Upper
Warning
Range
Cylinder Head
Temperature
(100 °F – 500 °F)
––
––
240 – 435 435 – 465
> 465
Engine Speed
(0 – 3000 RPM)
––
––
500 – 2700
––
> 2700
a
Exhaust Gas
Temperature
(500 °F – 1750 °F)
––
––
1000–1600
––
––
Manifold Pressure
(10 – 35 Inch Hg)
––
––
15 – 29.5
––
––
Oil Pressure
(0 – 115 PSI)
0 – 25
b
25 – 55
b
55 – 95
95 – 115
> 115
b
Oil Temperature
(75 °F – 250 °F)
––
––
100 – 235
––
> 235
Percent Power
(0 – 100%)
––
––
0 – 100
––
––
a. Engine Speed Warning when RPM between 2710 and 2730 for more than 10
seconds OR when RPM greater than 2730 for more than 5 seconds.
b. Oil Pressure Caution when oil pressure is between 25 and 54 psi and RPM is
greater than 1000. Oil Pressure Warning when oil pressure is below 25 psi, OR oil
pressure is above 115 psi.
Reissue A