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Frontier > A320NEO LEAP/Engine > Flashcards

A320NEO LEAP/Engine Flashcards

1
Q

In the LEAP 1A engines, which rotor is the accessory gear box connected to?

A

The N2 rotor

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2
Q

How many channels does the FADEC have?

A

2

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3
Q

What parts comprise the N1 rotor on the CFM LEAP 1A engines?

A

The fan, a 3-stage low-pressure compressor, and a 7-stage low-pressure turbine

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4
Q

What parts comprise the N2 rotor on the CFM LEAP 1A engines?

A

A 10-stage high-pressure compressor, and a 2-stage high-pressure turbine

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5
Q

How many fuel nozzles does each combustion chamber have on the LEAP 1A engines?

A

19

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6
Q

What type of thrust reversers do the LEAP 1A engines have?

A

Cascade type reversers. The reversers use blocker doors to block the normal flow of air and therefore cause the flow to be reversed. During reverse thrust, the core engine airflows continues to flow normally

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7
Q

How many fuel/oil heat exchangers does each combustion each LEAP 1A engine have?

A

2

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8
Q

What stage does bleed air normally come from? What if this bleed air pressure is insufficient?

A

It normally comes from the intermediate pressure stage (IP). If the engine is at low thrust levels and/or the IP is not sufficient, the high pressure (HP) stage valve opens to maintain adequate bleed air pressure and temperature.

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9
Q

Can each FADEC channel control both engine igniters?

A

Yes

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10
Q

What do the FAULT lights next to the ENG MODE selector mean?

A

-The position of the HP fuel shutoff valve is abnormal, or
-The automatic start sequence of the associated engine is aborted, or
-There is a malfunction of the thrust control

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11
Q

What calculates the amount of thrust for each Thrust Lever Angle (TLA)?

A

The FADEC

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12
Q

What thrust does the FADEC command if the thrust levers are set BETWEEN 2 different detents?

A

The FADEC computes and commands power for the next higher detent

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13
Q

What will happen if you change the flex temperature mid takeoff?

A

Nothing. It will maintain the thrust based on the original flex temperature.

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14
Q

What can you do to get maximum continuous power shortly after takeoff, when a flex temperature was entered?

A

Briefly move the thrust levers to the TOGA detent or the CL detent, and then back to the MCT detent. Once this is done you’ll get MCT thrust and cannot get flex thrust again until you’re on the ground.

Note: If the thrust levers do not fully enter the CL or TOGA detents before going back to MCT, you’ll continue to get FLEX thrust instead of MCT. So be sure to be completely in either the TOGA or CL detents prior to returning to the FLEX/MCT detent.

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15
Q

When will you see LVR ASYM on the left hand column of the FMA?

A

If the A/THR is active with both engines running and one thrust levers is set out of the CL detent.

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16
Q

What does the blue circle on the N1 dial represent?

A

It represents the N1 rpm that corresponds to the current thrust lever angle (TLA)

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17
Q

What does the AMBER mark on the N1 dial represent?

A

It represent the maximum N1 RPM commanded when the thrust levers are set to the TOGA detent.

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18
Q

What does an amber REV mean on the N1 dial?

A

When reverse thrust is selected it means that a reverser door is not stowed or is unlocked. If a reverser unlocks in flight it pulses amber for 9 seconds then displays steady amber.

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19
Q

What appears on the EGT dial if the engines ever exceed the maximum permissible EGT value?

A

A red line will appear on the EGT dial to indicate the maximum temperature that the engine actually reached. That red marker will stay there until either a maintenance action is performed on the MCDU or a subsequent takeoff is performed.

20
Q

What’s different about the N2 display during engine start?

A

During engine start the N2 number has a gray background. That background changes to black when the N2 stabilizes after engine start.

21
Q

When would a red cross ever appear next to the N2 number?

A

When the maximum N2 value is exceeded. That cross will remain there until either a maintenance action is performed or the next takeoff.

22
Q

What displayed on the top right of the E/WD?

A

The current thrust rating mode

23
Q

When does the “F. USED” quantity reset?

A

When the engines are started, the previous fuel used value goes to zero.

24
Q

When does the “F. USED” quantity reset?

A

When the engines are started, the previous fuel used value goes to zero.

25
Q

When will ambers lines appear through all digits of the F. USED value?

A

When fuel measurement is interrupted for more than 1 minute

26
Q

When will the Engine Nacelle Temperature (NAC) ever be displayed on the engine page?

A

If the nacelle temperature is ever excessive with the engine running

27
Q

When will you ever see “ICE PROT” on the engine page?

A

The LEAP 1A engine have automatic core engine ice protections as well as booster anti-ice protections. When these automatically come on to protect the engine from ice crystal icing, ICE PROT—CORE, or ICE PROT—BOOST will be displayed on the engine page.

28
Q

Approximately how tall are the sharklets?

A

2.4m or about 7’11”

29
Q

What is the wingspan of the A320 enhanced and A320NEO?

A

117’ 6”

30
Q

What’s the recommended turbulence airspeed for the A320NEO at 20,000’ and 31,000’?

A

20,000’ = 260kias
31,000’ = 280kias

Note: this is per the Schoox training module. It’s apparently not in our books any longer

31
Q

What’s the different in the crew oxygen system between CEO and NEO aircraft?

A

CEO = 1 Oxygen bottle
NEO = 2 Oxygen bottles

32
Q

When does the CKPT OXY on the “doors” page turn amber?

A

-When atleast one bottle pressure is below 200psi, or
-Low bottle pressure is detected on atleast one bottle, or
-The CREW SUPPLY pushbutton is OFF

33
Q

When does the crew oxygen psi value begin to pulse green on the NEO aircraft?

A

When the pressure drops below 500 PSI

34
Q

When will the crew oxygen psi value have an amber half frame around it on the NEO aircraft?

A

It will have an amber half frame around it when the pressure drops below 800 PSI on the ground. This is to remind the crew to check and see if the O2 pressure is sufficient for that particular flight.

35
Q

What’s the highest altitude the APU can supply bleed air to start an engine, or to operate a single pack?

A

20,000’

36
Q

What’s the highest altitude that the APU can supply bleed air for both packs?

A

15,000’

37
Q

Can JP4 fuel be used on an A320 NEO?

A

No

38
Q

Is the center tank fuel ever supplied directly to an engine in a NEO aircraft?

A

No. In a NEO aircraft the center tanks pumps are just jet pumps that only move fuel from the center tanks to the inner wing tank.

39
Q

What is the difference between the fuel panels between an A320CEO and an A320NEO?

A

In an A320CEO you have center tank pump buttons which pumps can send fuel directly to the engine. In the NEO aircraft the same buttons are relabeled CTR TK L/R XFR. These buttons now can control jet pumps that allow fuel to be moved from the center tanks to the wing tanks, but do not go directly to the engines.

40
Q

What’s the fuel feed sequence in a NEO aircraft?

A

1.) Engines draw from the inner wing tank
2.) when 550 lbs of fuel has been used from each of the inner wing tanks, the center tanks transfer fuel to the wing tanks until they are full (up to the overflow sensor)
3.) Cycle continues until the center tanks is empty
4.) When the inner tank reaches 1650lbs each, the outer tank transfer valves latch open, allowing the outer tanks to flow into the inner tanks
5.) Inner wing tanks continue until they’re empty

41
Q

What controls the transfer of center tank fuel in AUTO mode?

A

The Fuel Level Sensing Control Unit (FLSCU)

42
Q

What does it mean when the word PACKS is displayed on the top of the E/WD?

A

It means that the packs are being supplied by engine bleed air. This should be a good indication of pack status during the before takeoff checklist.

43
Q

What does it mean when NAI is displayed on the top of the E/WD?

A

It means that the engine anti-ice pushbuttons are on

44
Q

How many valves regulate the bleed air going to heat the engine nacelles? If there’s no bleed pressure, which position do these valves fail to?

A

There are 2 valves, the pressure regulating and shut off valves. Both must be open to send hot bleed air to the nacelles. If electrical power is failed or pneumatic pressure is not available, these valves will remain closed*

*Need to check vol 3. I thought these failed open.

45
Q

What does WAI mean when displayed on the top of the E/WD?

A

Wing anti-ice pushbuttons are ON

Frontier (40 decks)

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