Pilot's Operating Handbook
Section 2
Limitations
EASA Approved
Edition 0 - March 05, 2019
Rev. 0
Page 2.8.2
Engine instruments
Engine instrument markings and their color code significance are shown in
figure 2.8.3.
Indication
Red
line or arc
--------------
Minimum
limit
Yellow
line or arc
---------------
Caution
range
Green
line or arc
---------------
Normal
operating
Red line
---------------
Maximum
limit
Oil
temperature
- 40
°
C
(- 40
°
F)
- 40 to 0
°
C
(- 40 to 32
°
F)
104 to 110
°
C
( 219.2 to 230
°
F)
0 to 104
°
C
(32 to 219.2
°
F)
110
°
C
(230
°
F)
Oil pressure
60 psi
60 to 105 psi
105 to 135 psi
135 psi
(red line)
normal limit
Generator RPM
(Ng)
---
103 to 104 %
51 to 103 %
104 %
Propeller RPM
(Np)
---
---
1950 to 2050
RPM
2050 RPM
ITT
Engine start
or
off
---
840 to 1090
°
C
(1544 to 1994
°
F)
400 to 840
°
C
(752 to 1544
°
F)
840
°
C (1544
°
F)
normal limit
---------------
870
°
C (1598
°
F)
---------------
1000
°
C (1838
°
F)
(red line)
---------------
1090
°
C (1994
°
F)
absolute limit
Engine running
820 to 840°C
(1507 to 1544°F)
400 to 820
°
C
(752 to 1544
°
F)
840
°
C (1544
°
F)
normal limit
Torque (TRQ)
---
100 to 110 %
0 to 100 %
100 %
(red line)
---------------
110 %
Figure 2.8.3 - Engine instrument markings
PIM - DO NOT USE FOR FLIGHT OPERATIONS