Engines Flashcards
Which three engine oil parameters are displayed?
Oil pressure, temperature and quantity
When operating with the lower screen blank, what indications are displayed if the left engine oil pressure falls into the caution range?
Oil quantity, temp and pressure for both engines
What indications are given if the oil pressure falls below the limit?
Left press in red, plus L ENG OIL PRESS message and light
What is the minimum oil temperature to advance the thrust levers?
-10°C
Which fuel valves are controlled by the fuel control switch?
ENGINE and SPAR
When do the ENGINE FUEL VALVE and FUEL SPAR VALVE lights illuminate?
When the valves are not in the commanded position
Where is engine fuel flow displayed?
EICAS Secondary engine indication
Where can fuel used be checked?
The F.M.S. (Progress Page 2)
How many ignitor units does each engine have?
Two
Will the ignition operate if the Fuel Control Switch is at CUTOFF?
No
Which switch selects which ignitor unit is used?
Ignition Selector Switch
What happens if the engine fails to light after 20 secs?
The other ignitor is activated.
When is Auto Relight enabled?
In the air or on the ground if N3 drops below idle, using both ignitors.
With the Engine Start Selector at CONT, when is ignition actvated?
The selected ignitor runs continuously if the fuel control switch is at run
What is the difference between the CONT and FLT selection of the
Engine Start Selector?
FLT uses both ignitors, regardless of ignition selector position.
During a normal ground start sequence a. When does ignition start?
When Fuel Control switch is selected to RUN
During a normal ground start sequence. When does ignition stop?
At 50% N3 when start selector moves back to AUTO
What action opens the start valve?
Start selector to GND
When does the start valve close?
Automatically at 50% N3
What does the start VALVE light indicate?
Start valve is not in commanded position.
What is the recommended duct pressure for a ground start,?
30 psi
What does the STARTER CUTOUT message and VALVE light indicate?
Starter valve has remained open after engine start
What causes automatic display of secondary parameters?
Entry into the caution amber band, or a red line limit
What happens when the red line limit or amber bands are reached?
The pointers, digits and boxes change to that colour
What additional indication is given if N1, N2, N3 or EGT limit I exceeded?
Max exceedance value, displayed in smaller white numbers
Which parameter uses an amber line as the limit?
EPR
With the EEC in the norma1 mode of operation, which parameter does the thrust lever control?
EPR
Will the engine exceed the EPR limit if the thrust lever is selected fully forward?
No, it is limited to maximum EPR
When does the EEC. use the ALTERNATE mode?
Failure of the normal E.E.C. mode of operation
How is maximum thrust limit depicted on EICAS?
An amber line on the EPR indicator
What happens to reduced climb thust above 10,000ft?
It will gradually change to full climb thrust by 30,000ft
What percentage of full climb power do these selections produce?
1 gives 90%, 2 gives 80%
Which control selects the takeoff derate?
The Assumed temperature selector
What powers the thrust reversers?
Bleed air from the respective engine
What does amber REV Indicate?
Reverser unlocked or in transit
What does green REV indicate?
Reverser fully deployed
During an engine ground start, what conditions must be met before selecting the fuel control switch to RUN?
N1, N2 rising, EGT below100%, N3 at 25% N2 10% or max motoring (Oil Pressure must be normal when Engine at Idle)
Having selected the Fuel Control to RUN, what is the maximum time for EGT rise?
30 secs
What is EGT limit on start and where is it displayed?
Red line on the E.G.T. indicator
What actions should be carried out by recall if both engines fail in flight?
Engine Start Selectors (Both)……… FLT,
Thrust Levers (Both)………………. Close
Fuel Control Switches (Both)……… Cut-Off, then RUN APU Selector………………………. Start then ON
What actions should be carried out by recall if an engine surges or stalls?
Autothrottle………………………… Disconnect Autothrottle Arm Switch……………Off
Thrust lever………………………… Retard
