ATA 29

1. To access to the Hydraulic system component. Okay, from where you obsess The components of the
hyd system, which is? At main wheel well(MLG bay)

2.Which components We monitor the No devil sensor at hyd reservoir ? Okay, so this is the quantity in
the economy and Low level warning. Okay, We also this is the quantity.

We also have Temperature. Okay, overheated, Uh,

we also have the The low air pressure. Okay, because the reservoir is pressurized sentences, so we also
have pressure sensor with the gauge. Okay, so this is The basically to.

On the Reservoir. Okay, so you monitor is because on econ, you have the Uber heat, Low air pressure, or
the low level warning, you know. So, that's why we have recessors on the.

3. So, From where you're service of the reservo? Service From Green Service panel, you confuse to one
which one, okay, which one?

SERVICE FLUID RESERVOR ON GREEN PANEL

4.So, this is the, But what, where is it right? In the forward of the fairy of the flood truck, you know, the
flop truck You see? The. So, this is the number four because number one is inside Number one side
number two, three. Well, this is the location of the Ramirez turbine.

(RAT at fairing faring number 4 at RH)

STOW RAT PANEL ON YELLOW PANEL

To school The rod. We also have So normally the location of. So, because Each of To be closed,

5. the fire shutoff vlv isolate the hydraulic supply to the engine. So, for short of, Basically, is manually
controlled by five push button. Okay, the nd15 close, these two, okay, and who by this, yeah, basically,
But also, Uh, there is an automatically close The fight, shall thou of the cream, In which condition it will
automatic.

The green Reservoir? Yes, So if the green reservoir low level Are these, So this is only for breaking
basically is a manually, but there is one automatically. Is The green reservoir low level, But it will reopen
after 150 seconds if the blue or yeallow lever is normal. Also About it was Or manually can control, but
there is an automatically.

FSOV AUTO CLOSE IF LOW LEVEL <8L, AFTER 150s IF Y + B NO LOW LVL (5L) WILL BE RE-OPEN FOR LUB
EDP.
7. So, for the EDP, it's on the engine. Okay.

So for the edp, Uh? Uh, control. So, when you select push button or for arm, okay. So, How to control
the EDP to say it's awful off means it's deeper relation? Okay, not even it's a run, but they don't Supply
pressure. Okay, this means off. So, if the unposition when engine is running, it will supply pressure. It's a
facialized mode. So, how to control or which component can be controlled when you on off All the EP?
Okay, Because you select push button on off. In fact, this control the solenoid on the EDP to let it
pressurize remote or different engine mode. Okay, this is how to counter. So now inside Is energized. All
the energize for the presentation of declaration ending energize to depress position? Yes, okay.

ON THE OVERHEAD HYDRAULIC PANEL, AN ENGINE DRIVEN PUMP WHITE OFF LEGEND COMES
ON WHEN THE RELATED EDP
A. DEPRESSURIZATION SOLENOID IS ENEGIZED
B. DEPRESSURIZATION SOLENOID IS DE-ENGERGIZED
C. DISCONNECT SOLENOID IS ENGERGIZED

8. This is the primary of EDP, but we also have electric form each system. Now, The electric reform.
Basically, you can Manually controls are all let it automatically, but automatically is only in flight in some
special case. Okay, basically, you use a manual anymore. Okay, manually So for electric pump. If there is
some Failure of poem or something okay, amidst of the pump will monitor the pump, Which parameters
or which, Instead of monitored by the HSN for electric pump. We monitor is Okay. We followed The
unbalancing of current apparency. Okay, so this is the one we use This exit unit. Okay to monitor the
okay, okay. I'm balance current.

What else over heater okay over here? Yes, I know what else Pressure. Okay, so for electric pump, You
will monitor low pressure Over here, and abalance Is right. This is the for electric pump.

So, for electrical power, we monitor this Because we talk if the electrical form has overheater or
unbalance into where automatically stopped, And it's latched Stop. You must reset to the power supply.
Okay, CP, and then you can be. This is the election.
EMP MONITOR OVHT/PHASE UNBALANCE/LOW PRESS.

9.Okay, so We also have Leak measurement about okay. Each system has a leak measurement. Basically,
this new measurement the bar is used for maintenance, Fly control, civil control internally. Okay, you
see the basically for that During you to the test. Maybe you switch off a leak? Imagine about. Okay, So
when you switch off liquid measurement, you have push button off. That means you switch off the
hydraulic pressure To which users primary flight controls okay or to check internal leak , where you
switch off. No pressure Supply the primary flight control. Okay, so this is the measurement device.

LMV PUSH OFF WILL ISOLATE PRIMARY FLIGHT CONTROL

10. For today, when you can measurement, We will use a tool. This tool, we call Ultra-Sonic Flow
Measurement (USF). This one will use the in outside hydraulic pipe To measure the flow inside.
Okay, this is a use that you can imagine to check if you have the high flow or normal flow. Okay, Is high.
Flow means we have the high ethernet.

HIGH FLOW IT MEAN INTERNAL LEAK.

So if hydraulic system?

11.Hydraulic system. We should have Many filters, Uh, in high pressure side. We have a high pressure
future. Okay, And then in a little case train filter. Okay, strange filter is Engine. Okay, do you see that on
the engine? Okay, Uh, we also have a low pressure return filter. It just close to the reservoir. You
remember, usually, a component location This return filter As a bypass, It goes the other. There's no five
possible Only the returns. Youth has a bypass in the size In case of the future crop and bypass.

Phần này thầy nhắc đến đường return hyd có lọc return filter và nó có bypass vlv khi lọc bị tắc

I just appointed something to see if you can remember, But if you know the green, then the blue yellow
is more simple. Yeah.
The different of this is that because, Uh, for the green? The Future is a separated install. The high
pressure manifold is always having okay, weak and measurement, But for green, we have a breaking
many football. Okay, so this is only for green. If you see the blue yellow, you don't have this. You don't
have this. The filter is called the And assembly vacuum. The installed on the HP metal that's for the
green and the yellow indicate, So that's why I say it's more simple blue and the middle.

(phần này thầy giải thích chung chung khác biệt giống nhau G_B_Y )

So, any question of hydraulics For the electric pump, Uh, no, there's no hesitant filter for electric pumps.
The filter in this case drain line, but there's no filter. Okay, you have a case drink now. Okay, no. Filter
The case in front of 320, So we don't have the.

Also, go to the return line, So there's no future. But later, when we talk about the engine, we see the
engine component. We can see the EDP. Okay, if you want, I can show you right now. The case. Refuse
the location Because we will see that also on the engine.

So later later. So, on the front case on the side of the front gate, you have the gate string. Beauty Is next
to the beginning. Because Those Falls East Trend engine the gearbox is on the lower of these, So you can
see on the right hand side, the gearbox Right inside the funkit. There are three DP one rear of gearbox,
one in front installed So. Okay, and also you can.

Pressure switch, Okay. Press the switch on the upcon case. Okay, so

ATA 32

So, for the 90 gear, I already asked the request this morning. Okay, so I don't For the breaking system.

1. free fall – (cut vlv- vent vlv- door up lock-gear up lock)

2. So, for normal brake, It's used Green pressure. Okay, So in normal break, There are three different
way To start the breaking, which three different way different Have Auto break?

Manual brake

Auto brake

Inflight brake

THE BRAKING MODES CONTROLLER AND MONTORED BY THE BRAKE AND STEERING CONTROL
UNIT ARE MANUAL, AUTOMATIC AND
A. EMERGENCY/ULTIMATE BRAKING
B. PARKING BRAKE
 C. IN FLIGHT BRAKING

3. So, just to clarify The inflat is a break, We'll stop when you put the landing in the enable up. It will
stop Three seconds. The moves that in here Start to return. Yeah, this is what is a little?

Especially, for this is not very clear, So I got to say, okay, where you put the level up Break. These are
Supply, So when it stop them. The news. We are started not to download to start retract, whichever is
the first. Okay, whichever is. I understand it.

4.To start with this one, It's so awesome. With this up To stop The way I started jumping. So, this is the
The normal, Great! Yes, so the BSCU Is Component to control The normal brake because it's electric
control. Okay, So for normal brake, we also have the antiski function. Okay, The antiskied function is part
of the. So, which component is a used, Which component and use the four anti-skid function?

A pressure regulator. Okay, but also for empty skin to close. Okay, what else? No, no answer, Say, okay,
it's come true. Another component I just need for no fun.

Select one Is supplied pressure for break To really control the pressure on the on the wheel. Is servant?
Okay, add, select, or just surprise pressure supply hydraulic. You just close this one. They don't close
this. Okay, this is the current. This is during break. Yes, this is important Because attacker to know that
we have speed, and then we compare to a reference speed from the ADIU inside the ESO to know it's a
skilling condition. Okay, yeah, so can you do?
5.I already talked about because of the automatic selector. So this one Automatic selector, when the
green pressure Supply it will move to right hand side, and then It will be Okay, because when the green
Supply the normal bread is a priority, okay, so the hydraulic selection in the smooth automatic selector,
okay, and the screen pressure Supply?

Alterbrake sys

Ultimate, So the automated break Is not electric controlled. Okay, From better To use a low pressure
circuit From Society to control the two bar to regulate expression. Okay, this is the The pressure is a
mole turnip displayed on the trip indicator. Uh, the solo ultimate. The silver bar is electric, but this only
for empty speed function. Yeah, it's not for the brake pressure. Okay, it's only for empty skin if and this
video available. Okay, so we talked about when the empty skin is not available in the alternating.

Just in which configuration? Okay, you switch off that, okay, because this is the pscu stock for any
options. What else? Yes, you fail. Another case it could we know in this evening. Okay, yes, because if
screw system pressure is not available, you only have accumulated. So, now if you are using alternate
break, you know, empty In the. And this morning, we talk. Remember that No system pressure, the blue
system only accumulator. So, now if you are using alternate break with accumulator only, No empty skit
for me Because of yes, you know, the blue system?
 THE COMPONENTS USED TO REGULATE BRAKE PRESSURE DURING ALTERNATE BRAKING
WITHOUT ANTISKID IS THE
A. SERVO VLV
B. SHUTTLE VLV
C. DUAL VLV

Well, those we are scary.

6.So, for notice, we are steering To control Those were during. There are three possibility From copied. I
need to come, come on. So, one is from the nose wheels turning on the wheel- pedal . Another one is
autopilot.
7.If the hydraulic is available everything. Okay, so it will control By the silver bar to move to actually to
move the steering, and that is hydraulic not available, or The hydroke could be up to dehydraulic and
not available. Could be the Bscu not control. For example, you switch off Okay. This steering move Is
steering still move or not move? Okay, Aircraft. I'd say that, yes, Yesterday, You control the aircraft 30 by
the differential break or empty power different. The pressure break two side break different Or the
edging power different. You can still turn the aircraft okay, but when aircraft turned, the nose wheel is
also to move to turn. So, this turn, we call it a custody customer. Okay, so, so during customer ring, that
means you need, Uh, these two chamber Should be inside the screw the bypass bar. To prevent anti-K.
So then they are moved, but also no significant exist for how it works in case no control. No pressure In
customary. They are still moving, like. So why we need accumulate In this Theory system? That with
pressure mental diva, And then we can pressurize accumulated okay to maintain a certain pressure. So
this certain pressure is used for prevent gravitation during the. It's like a hydraulic system.

So, this is the location in the just above the blue Or many of the components. Okay, there is one liver.

This is a fermented, So this is, uh, what we say that the parade mini foot on the rear This is for?

Okay, just the one scene, So this pattern is on the first official side. First officials, like Right side, We see
the reservoir For the Alternate break Master signing. So this red bar When you see this red where the
line you need a service to feel the? Ethan. This is where there is an E. You can see only this green. It's
okay, This is just Remember the schematics. There are two master sign in the okay And the one resolva.
This is the four transmitter. Come on, the Mikarikiri, to move. The tuba Is a separator flute circular. It's
not mixed with normal hydraulic, the closed All right, well, yeah.

Let's see if this is, uh, you can see Mark here. This is the Thai pressure.

So, that's I think we, I show you, the couple of the location that comes from indicating simulation copied
And all these.