Figure 7.6.9 - GND FEATHER Switch
C
4
7
6
1
0
0
0
A
A
A
E
M
A
8
0
0
0
ON
GND FEATHER
CAS messages are displayed to monitor feathering:
CAS messages
Description
FEATHER MISMATCH
Indicates that the propeller is not feathered after a
pilot feather request through the GND FEATHER
guarded switch.
Engine Shutdown
-
On ground, when an engine shutdown is commanded, as soon as gas
generator speed drops below a given threshold, propeller feathering is
commanded through both the PCU servo valve and the solenoid.
When the propeller and gas generator speeds drop below a given threshold,
the solenoid is no longer electrically powered to preserve battery.
-
In flight, after an engine flameout or if engine shutdown is commanded, as
soon as gas generator speed drops below a given threshold, the PCU
commands propeller feathering. A few seconds later, the solenoid is also
activated.
The PCU and the solenoid remain electrically powered and command
propeller feathering until air start is performed.
Activation of FADEC Protections
-
Minimum blade angle protection: if dedicated sensors indicate that the
THROTTLE is in forward position and propeller blade angle goes below the
Section 7
Description
Pilot's Information Manual
PIM TBM 960 - Edition 0
Rev. 02
Page 7.6.26
PIM - DO NOT USE FOR FLIGHT OPERATIONS