Zenith STOL CH 750
Airplane Flight Manual
HB-YRC
Issued: 01.02.2020
Revision 0, Dat. 01.02.2020
Page 16-93
2.5 POWERPLANT INSTRUMENT MARKINGS
Power plant instrument markings and their color code significance are shown
below
Instru-
ment
Red arc/bar
lower
prohibited
range
Yellow arc
caution
range
Green arc
normal
operating
range
Yellow arc
caution
range
Red arc/bar
Upper
prohibited
range
Engine
RPM
-
-
1’400 - 5’500
RPM
5’500 - 5’800
RPM
> 5’800
RPM
Oil
Pressure
< 0.8 bar
0.8
– 2.0 bar
2.0
– 5.0 bar
5.0
– 7.0 bar
> 7.0 bar
Oil
Temp
< 50°C
50-90°C
90-110°C
110-130°C
> 130°C
Cooling
Temp
50-100°C
100-120°C
> 120°C
EGT
> 880°C
Fuel
Pressure
< 0.15 bar
0.15
–0.4 bar
> 0.4 bar
2.6 MISCELLANEOUS INSTRUMENT MARKINGS
Instru-
ment
Red arc/bar
lower
prohibited
range
Yellow arc
caution
range
Green arc
normal
operating
range
Yellow arc
caution
range
Red arc/bar
Upper
prohibited
range
Voltage
< 12 VDC
12
– 13 VDC 13 – 15 VDC 15 – 16 VDC > 16 VDC
Ammeter
-
-
0
– 11 A
12 - 17 A
> 19 A
