Engines Flashcards
After starting, the starter switch should be moved from start to _____ when the outside air temperature is _______ F or below
Ignition, 32
The engines produce ________ of thrust at sea level from ____to ____ degrees C
22,000 lbs from -54 to +32
Which engine gages will not operate when only battery power is used during engine start?
Oil PX and fuel flow gages
Damage to the starter can occur if the engine exceeds ______ with the starter valve open light on
63% N2
After engine start, allow the engine to operate at stabilized idle for ______ before advancing to a higher power setting. (greater than 70% N1)
2 minutes
Max motoring may be initiated when N2 reaches a minimum of ______.
20%
_____ is the engine parameter that indicates thrust
N1
The N1 & N2 indicators receive operating power from the ______.
Switched DC bus
If the starter fails to cutout after the starter switch is set to off, shutdown the engine and _______.
Close the applicable bleed valve
For ground operations, if the temperature is at or below 10C (50F), and visible moisture is present _______.
Place the starter switch to ignition and turn on the engine anti-ice
Maximum continuous thrust, is _______. (definition)
The highest thrust allowed for continuous operation
The PMC schedules ____ by trimming the _______ to maintain a constant thrust rating through different airspeeds and altitudes
Fan speed, MEC
During start, the EGT should rise within _______ after placing the throttle to start. If no rise occurs within ____ abort the start
2-3, 10
Damage to the starter can occur if the starter is reengaged _____ on the ground
Above 25% N2
If any engine remains in flight idle after touchdown, the ______ should be shutdown as soon as practicable
Outboard engines
Flight idle provides the engine with _______ from idle to go-around thrust. Ground idle provides______ for ground operations
Min acceleration time, Min thrust
Once the starter valve light has extinguished, the starter switch has to be placed to ______, then _____ to reengage the starter
Off, Start
The engine inlet danger area extends from 5 feet behind the inlet out to ____ ft forward and laterally at idle power
25ft
If the fuel flow exceeds 680 pph before light off, ______.
A hot start can occur
The ____ sends an electrical throttle position signal to the ____ for operation and to set the PMC demand pointer on the _____ tachometer
MEC, PMC, N1
When a fire switch is pulled, ______ are cut off to the engine by the firewall shutoff valves
Fuel, HYD & Pneumatic supplies
Peacetime takeoff should not be attempted if ______ PMCs are inoperative
More than 1
The starter valve light comes on when the associated engine starter valve _______
Moves out of closed position
A rise in engine oil temperature during normal steady state operations indicates _____.
A system malfunction or engine bearing failure
During engine start, at temperatures at or below 0 degrees C, set applicable starter switch to _______ at 50% N2 rpm
Ignition
Following a throttle reduction, oil temperature may rise above 160 degrees C. Advancing the throttle may reduce the oil temperature due to _______.
Increased fuel flow through the fuel-oil cooler
Except during EWO, use the _____ takeoff procedure when taking off with an inoperative PMC
Static
Pressing the illuminated EXT switch discharges the extinguisher bottle into the______.
Fan section and around the accessory section
During a normal engine start, if the APU or air cart is unable to motor the engine to 25% N2, the start sequence can be initiated ________.
When maximum motoring rpm is reached at 20% rpm
Once the starter valve has closed, _____ to reengage the starter
Place the starter switch to OFF and to START
If engine light-off is not indicated within 10 seconds after fuel is applied, _____.
Discontinue the start
Pulling the fire switch deactivates ______ and arms ______.
The generator and engine ignition, fire bottle discharge squib
Loss of power to the switched DC bus will _______ the N1 and N2 indicators
Result in loss of
The engine fan provides ________% of total thrust at takeoff
80%
The power management control (PMC) system sets the fan speed by trimming the ______ to maintain a constant thrust setting through different airspeeds and altitudes
MEC
Between start attempts, the engine must be allowed to cool for _________ seconds
60 Seconds
During a scramble start, the __________ engines should be started once the _______ engines reach ____________ % N2
outboard; inboard; 42
During ___________, a power management control (PMC) failure is indicated by the N1 undershooting during initial power setting
takeoff
If you see insufficient N2 rpm while trying to start an engine, what might you suspect?
Bleed air leak
The engines decelerate to ground idle in about ________ seconds of main gear touchdown
10 seconds
Engine acceleration from ground idle to takeoff rated thrust (TRT) may require up to ________ seconds
25
Which parts of the engine are heated by the engine anti-ice system?
Inlet cowl
To help prevent engine ice from forming, the engines should be operated above _______ N1 as much as possible
70%
When descending, turn on engine anti-ice at least ______ above the highest icing level in order to provide adequate warmup time
10,000 feet
During prolonged flights at low altitude and high temperature conditions, which tank pumps should be alternated at frequent intervals to reduce probability of overheating the hydraulic systems?
Forward body and aft body
The main engine control (MEC) does not introduce fuel into the engine until the throttle is placed in the start range. The fuel flow ranges between ______ and ______ pph prior to light-off
300-680pph
With PMC OFF the engine no longer has ____________ protection. For takeoff, the PMC inoperative engine should be set _____ less than the others
Overboost , 2%
The starter initiates automatic cutout between _______________ and takes 3-9 seconds to complete
43 – 45% N2
The red discharge indicator disc ruptures when the fire extinguisher bottle’s contents are discharged into ________________
The atmosphere
The engine ___________________ are fireproofed to prevent the spread of fire
nacelle and strut
At TRT, the engine inlet danger area extends from __________ in front to _________ behind the inlet
50’ , 6’
After landing, allow the engines to operate for at least ______________ at ______ or less before shutdown
3 minutes , 45% N1
If moderate or greater icing is expected in a descent use a minimum of _________ N1
60 %
If the exhaust gas temperature gage (EGT) exceeds ______________ C, the engine must be shut down
930
The EGT caution light comes on when temperature increases above _________
870 +/- 2degrees Celcius
The EGT caution light goes out when temperature drops below __________
850
