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CL-350S Study Cards > ECS/PNEUMATICS/ICE AND RAIN > Flashcards

ECS/PNEUMATICS/ICE AND RAIN Flashcards

1
Q

What is HP?

A

High Pressure Bleed air.

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2
Q

What is IP bleed air used for?

A

Air conditioning, pressurization, and engine start.

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3
Q

What pressure is IP regulated to?

A

50 psi

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4
Q

What is HP bleed air used for?

A

Wing and engine anti-ice.

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5
Q

What pressure is HP bleed air regulated to?

A

36 psi.

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6
Q

What are IASC’s?

A

Integrated Air System Controllers (2 installed IASC 1 and IASC 2)

Brains of the pneumatic system.

Each IASC has 2 Channels (A + B)

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7
Q

What is IP?

A

Intermediate Pressure Bleed air

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8
Q

What do the IASC’s monitor?

A

IASC 1 monitors the Left IP and HP bleed valves

 Channel A monitors ECS and Pressurization
 Channel B Monitors Wing Anti Ice and Leak Protection

IASC 2 monitors the Right IP and HP bleed valves

 Channel A monitors ECS and Pressurization
 Channel B Monitors Wing Anti Ice and Leak Protection
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9
Q

Why would you select manual temperature?

A

It gives you a wider temperature selection range.

AUTO: 15-35 degree temp. range
MANUAL: 3-70 degree temp. range

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10
Q

Wing temperature sensors closer to the wingtips measure what?

A

Underheat.

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11
Q

Wing temperature sensors closer to the fuselage measure what?

A

overheat.

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12
Q

In what position do wing anti ice valves fail?

A

They fail closed.

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13
Q

When is T2 heated?

A

T2 is heated electrically when the engine anti ice is selected to ON.

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14
Q

Max Runway contamination depth?

A

.5”

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15
Q

What kind of air comes out of the gaspers?

A

ALL COLD AIR.

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16
Q

On the ground, when do you use engine anti ice?

A

OAT 10 degrees or less in visible moisture or on contaminated surfaces.

17
Q

On the ground, when do you turn on wing anti ice?

A

OAT is 5 degrees C or less in visible moisture. (If de-iced with Type II or IV, delay turning on wing anti ice to just prior to thrust increase for takeoff)

18
Q

When do you turn on Engine anti ice on in flight?

A

When TAT is 10 C (to SAT -40 C) in visible moisture or a CAS ICE DETECTED message.

19
Q

When do you turn on WING anti ice on in flight?

A

When the TAT is 10 C (to SAT -40 C) in visible moisture, the airspeed is below 210 KIAS or anytime an amber ICE DETECTED CAS message is displayed.

20
Q

Sequence for transferring the bleeds from APU to Engines

A

X BLEED closed, L BLEED ON, APU BLEED OFF, R BLEED ON.

**Opposite for transferring from Engines to APU.

21
Q

When the L (R) PROBES switches are selected ON, the following probes/sensors are heated:

A
  • Left and right standby static ports
  • Left and right AOA sensors
  • Left and right Pitot-Static probes
  • TAT probe
  • Standby Pitot probe
22
Q

What happens when you select TRIM AIR ONLY on the ECS panel?

A

Opens Right Flow Control Valve
Closes Left Flow Control Valve
Closes the Pre-cooler Crossover Valve (PCV)
TRIM AIR ONLY CAS msg displayed

23
Q

What is the purpose of waiting 2 minutes before commencing the anti-ice test?

A

To allow the low temperature sensors (Underheat sensors) in the wing tips to detect sufficient heat.

24
Q

An Amber (L/R) BLEED LOOP FAIL EICAS message indicates:

A

Both Loops of a dual-loop zone are inoperative.

25
Q

Normal cabin and cockpit temperature control is accomplished by:

A

Hot Air Regulating Shutoff Valves (HARSOVs) modulating hot Trim Air through injectors.

26
Q

When the Air Source Selector switch is selected to TRIM AIR ONLY, what happens to the Left Flow Control Valve, Right Flow Control Valve, and the pre-cooler crossover valve?

A

Left Flow Control Valve - CLOSES
Right Flow Control Valve - OPENS
Pre-Cooler Crossover Valve - CLOSES
TRIM AIR ONLY CAS message is displayed.

27
Q

2 valves in the Pneumatic/Anti Ice systems that DO NOT fail closed.

A

Engine Anti-Ice valve - Fails OPEN

Outflow Valve - Fails in its last position.

CL-350S Study Cards (14 decks)

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