Figure 7.6.9 - GND FEATHER Switch
C4761000AAAEMA8000
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
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