PILOT’S OPERATING HANDBOOK
SECTION 2
LIMITATIONS
EASA Approved
Edition 0 -- October 31, 2013
Rev. 1
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 100 psi
100 to 135 psi
135 psi
Generator RPM
(Ng)
---
---
51 to 104 %
104 %
Propeller RPM
(Np)
---
450 to 1000 RPM
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)
(< 20 seconds limit)
---------------
1090
°
C (1994
°
F)
(red line)
absolute limit
Engine running
---
400 to 840
°
C
(752 to 1544
°
F)
840
°
C (1544
°
F)
normal limit
Torque (TRQ)
---
100 %
0 to 100 %
101 %
Figure 2.8.3 - ENGINE INSTRUMENT MARKINGS