T6 vigtige informationer - systems Flashcards
What does the PMU do?
The PMU:
- Processes power requests from the PCL,
- keeps the engine and propeller within operation limits
- Provides a near linear power response between idle and maks
How is power controlled with the PCL?
The PCL is mechanically connected to the Fuel Management Unit (FMU) - moving the PCL provides a physical input to the FMU, which is then fine tuned by the electronic input given from the PCL to the PMU.
How is the PMU powered?
Primarily by the Permanent Magnet Alternator (PMA). If the PMA does not work the PMU is powered by the battery bus.
When should oil level be checked after engine shutdown?
When is it most accurate to check oil after engine shutdown?
Within 30 minutes.
15-20 minutes.
To which altitude is 100% Torque available?
To 12.000’ - 16.000’
How can the propeller be feathered?
By placing the PCL to idle:
- Feather dump soleid valve,
- PMU releases the oil pressure
Which tasks does the Engine Data Manager (EDM) perform?
- Drives primary, alternate and engine/systems displays,
- Illuminates annunciators as required,
- Fuel Balancing,
- Fuel Quantity,
- NWS annunciator,
- Display of DC volts and AMPs,
- HYD pressure,
- Cockpit pressure altitude,
- Cockpit pressure differential.
Are all information on the Alternate Engine Data Display (AEDD) generated the same way as for the Primary Engine Data Display (PEDD)?
NO. Most information on the AEED is provided directly from the EDM. Only the torque information is provided from the PMU to both the PEDD and the AEDD.
What is normal operating range for HYD?
3.000 PSI plus/minus 120 PSI (2.880-3.120 PSI)
What does puling the FireWall Shutoff handle do?
- Mechanicaly shuts off HYD and FUEL to the engine.
- Mechanically shuts off bleed air from the engine to the cockpit
What is a FEVER check?
Fluctuating Oil TEMP, OIL PRES or HYD PRES Excessive ITT Visual indications (Smoke or flames) Erratic engine operation Roughness or vibration
Which components are connected to the HOT battery bus?
- Clocks
- ELT
- BAT Switch
- OBOGS
- EMER FLAPS
- FDR
- RAM air valve
How many fuel tanks on the T6?
How much fuel do they hold?
Total fuel on the T6?
3
Wings: 540 lbs
Central collector tank: 40
1.100 lbs + 100 if over the wing refueled
Where is the boost pump located?
When is it used?
The boost pump is located in the collector tank.
During initial start, as back-up for the engine-driven low pressure pump, when the switch is ON, and when the pressure in the fuel flow return line drops below 10 PSI with the PCL above the start ready position.
Describe the fuel flow from the tanks to the FMU.
From wing tanks to the central collector tank.
From CCT through primary jet pump or boost pump to the fuel filter.
From the fuel filter to engine low pressure pump
From the low to the high pressure pump - or via the motive flow line back to the collector tank.
From the high pressure pump to the FMU or via the purge line back to the collector tank.
From the FMU via the fuel flow transmitter to the engine and the FF gauge.
