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KEY LIME STUDY 2019 > ORAL * E145 Landing Gear and Brakes > Flashcards

ORAL * E145 Landing Gear and Brakes Flashcards

1
Q

How Many WOW sensors?

A

5…2 each main, 1 nose

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2
Q

Nose WOW switch used by what?

A

Thrust reverser logic and steering control

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3
Q

How do mains doors operate?

A

Mechanically linked with an arm to landing gear leg

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4
Q

How does nose door operate?

A

Hydraulically actuated and operate in sequence with the nose gear

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5
Q

Landing Gear Lever is

A

Electric, and is linked to the LGEU Landing Gear Electronic Unit

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6
Q

During retraction how does LGEU control retraction?

A

Handle in UP commands Nose Gear Door Solenoid Valve and Landing Gear Electrovalve…This allows pressure from HYD system 1 to reach the down unlock actuators and the landing gear actuators

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7
Q

After landing gear up and locked what happens?

A

Gear sensed up and locked and nose gear door closes then landing gear electrovalve is depressurized

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8
Q

Why can’t you move lever on ground

A

Ground prox switch locks it

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9
Q

Can you over ride lever?

A

Yes, with an unlock button

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10
Q

What does override do?

A

Bypasses LGEU and directly actuate gear valves

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11
Q

How does Free Fall release gear?

A

Mechanically unlocks the unlocks and depressurizes the lines

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12
Q

When does Landing Gear voice message occur?

A

< 1200 ft and idle, any flap condition, can cancel
<1200 ft and idle, flaps 22, cannot cancel
Flaps 45 any alt, cannot cancel

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13
Q

How to cancel Gear warning audio

A

Guarded Button on center pedestal

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14
Q

In the GEAR WARNING Button amber bar…when will it go away?

A

Put the gear down, or flaps 22 or greater or advance the thrust,

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15
Q

If RA failed does landing gear warning work?

A

Yes, it triggers at any altitude

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16
Q

LG/Lever disagree when?

A

Gear isn’t in position after 20 seconds

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17
Q

Gear is in transit…what is on EICAS?

A

Amber/black hatches

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18
Q

Where do landing gear down and locked indications appear?

A

EICAS, and RMU engine backup page

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19
Q

Landning gear lever disagree shows how?

A

Red/Black cross hatched boxes on EICAS

20
Q

BCV Valves..ow many

A

4 one on each wheel

21
Q

What are normal braking protections?

A

Anti Skid, Wheel locked, and touchdown protection

22
Q

Anti skid auto above what speed?

A

10 knots

23
Q

Locked Wheel Protiection at what speed?

A

30 knots

24
Q

Touchdown protection prevents brakes until

A

3 seconds WOW, or 50 knots on wheels

25
Q

What stops wheel spin on retractions

A

Brakes on mains, and a stopper in the nose

26
Q

Emergency Brake Protections?

A

Overrides all

27
Q

Can you adjust brake pressure with emergency handle?

A

Yes

28
Q

If you pull emergency brake how is it actuated?

A

Mechanically

29
Q

What HYD system on Emergency Brake?

A

2, from system 2 accumulator

30
Q

Emergency Brake indication on?

A

BRAKE ON

31
Q

EMRG BRK LO PRESS…can emergency brake be used?

A

Yes, Once if there’s no leakage

32
Q

How many uses of emergency brake with accumulator only

A

6…or 24 hours of emergency brake sitting still

33
Q

How to set emergency brake?

A

Press brake pedals in set or release

34
Q

BRAKE OVERHEAT?

A

450C

35
Q

on MFD, indications are green when?

A

At or below 250C

36
Q

Nosewheel steering…which HYD system?

A

HYD 1

37
Q

Nose wheel steering with pedals?

A

5 degrees

38
Q

Steering with pedals and steering handle?

A

76 degrees

39
Q

Steering with Steering handle only?

A

71 degrees

40
Q

Steering system shuts off if rudder inputs displaces wheel how much?

A

7 degrees…reset with steering handle

41
Q

How do you manually disengage steering

A

Button on control wheel…allows castering

42
Q

What caution message if you push Steering Disengagement Button?

A

STEER INOP

43
Q

How do you reset steering

A

Push down on steering handle

44
Q

Priority..Steering Handle or Disengagemtn button?

A

Handle

45
Q

VLO Up….Down? Down and Locked?

A

200 up, 250 down, and down and locked

46
Q

Brake wear…how do you tell?

A

Brake wear indicators on the brake assembly. (Pins) When they’re flush, replace

KEY LIME STUDY 2019 (22 decks)

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