Operation & Maintenance Manual
CD-135 / CD-155
OM-02-02
Chapter:
Issue:
Issue date:
Page:
Content:
02-OM-04-02
4
30.07.2014
4
10
Revision no.:
Revision date:
2
02.09.2015
h)
The A light extinguishes, idle speed is reached; the test is
completed.
i)
Release test button.
WARNING:
If there are prolonged engine misfires or the engine shuts down
during the test, do not attempt a takeoff with the airplane.
WARNING:
The entire test procedure must be performed without any faults.
Takeoff is not permitted with the airplane if the engine stops or
the FADEC warning lights start to flash. This applies even if the
engine seems to run perfectly again after completion of the test
procedure.
Note:
If the test button is released before the self-test is completed,
the FADEC immediately switches to normal mode.
Note:
While switching from one FADEC to another, it is normal to hear
and feel a momentary surge of the engine.
Fig. 4.1
FADEC and propeller pitch functional check
Act
ive
ECU
0
1
P
ropel
le
rC
ontrol
duty
c
yc
le [%
]
0
10
20
30
40
FADEC and propeller pitch functional check
Operation Manual - OM-02-02_3-1
FADEC A Sequence
FADEC B Sequence
End of test - Recovery time to idle
P
ropel
ler s
peed [
rpm]
800
850
900
950
1000
1050
1100
1150
1200
1250
Time [s]
0
5
10
15
20
25
30
ECUAct-A
ECUAct-B
Prop-DC-A
Prop-DC-B
Propeller speed [rpm]