Main Mechanical Boost Pump
The
mechanical
boost
pump
is attached to the accessory gearbox and supplies
fuel necessary for engine operation.
Engine Fuel System
The engine fuel system consists of a fuel regulator, pumps, filters, a fuel divider
and fuel nozzles. The system provides the fuel flow necessary to satisfy the
engine power and rating requirements.
When fuel from the airplane fuel system enters the engine fuel system, it passes
through a heater that is automatically controlled by a thermostatic valve.
Fuel Gauging Installation
Fuel quantity is measured using capacitive-type sensors. Fuel quantity is
displayed in US gallons.
Three fuel level gauges are installed in each tank. The fuel level gauge on the
wing root side is equipped with a low level detector which leads to the display of
CAS messages of a fuel low situation when usable fuel quantity remaining in the
concerned fuel tank is under approximately 9 USG (34 liters).
Fuel System Monitoring
Fuel system monitoring is ensured by the following CAS messages:
Table 7.8.1 - Fuel System Monitoring CAS Messages
CAS message Description
FUEL OFF FUEL TANK SELECTOR is set to OFF
FUEL PRESS
Fuel pressure at mechanical boost pump outlet is
under 10 psi (± 2 psi)
FUEL CLOGGING Fuel filter is clogged and fuel is no longer filtered
FUEL CLOGGING Fuel filter clogging is imminent
AUX BP ON
Electric fuel boost pump is running (manual or
automatic mode)
Continue ►
Section 7
Description
Pilot's Information Manual
PIM TBM 960 - Edition 0
Rev. 00
Page 7.8.10
PIM - DO NOT USE FOR FLIGHT OPERATIONS
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