Ice & Pneumatics

Question 1

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

If the bleed air switches were in the off position, would bleed air be available for operation of the de-ice boots?

Answer 1

Yes

Question 2

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

What will happen if the engine bleed switches are on with the APU bleed air switch on?

Answer 2

APU bleed air will not be available

If either of the engines bleed air toggle switches are selected on, the APU bleed valve will close. This ensures that bleed air is not being supplied from both the engines and APU at the same time.

SDM 4-5

Question 3

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

When must bleed air be off for takeoff?

Answer 3

Bleed air must be off for takeoff whenever:
• Tailwind component exceeds ten knots
• Takeoff is conducted with MTOP power selected
• Windshear is suspected QX

FSM 1.8.2

Question 4

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

When must bleed air be off for landing?

Answer 4

For landing, bleed air must be off whenever:
• Tailwind component exceeds ten knots
• Reported OAT exceeds 39°C (100°F)
• Windshear is suspected QX

SFM 1.8.2

Question 5

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

What is the Maximum cabin pressure differential during takeoff and landing?

Answer 5

0.5 PSI

Question 6

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

Where would you find the CABIN PRESS Warning checklist?

Answer 6

IAC and E&A checklist

Question 7

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

What is the minimum crew O2 pressure?

Answer 7

1050 for two crew operations

1450 for three crew operations (jumps eat)

Question 8

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

How long should you wait after APU start to turn on the APU Bleed Air?

Answer 8

2m

Question 9

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

Which outflow valve is used to control cabin pressure?

Answer 9

Aft outflow valve

Question 10

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

What is the function of the Forward Safety Outflow Valve?

Answer 10

Emergency operation ( smoke and fumes removal)

Question 11

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

When in manual pressurization mode, moving the man diff switch operates which outflow valve?

Answer 11

The aft outflow valve

Question 12

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

If the CABIN PRESS Warning light illuminates at FL230, what should be stated by the pilot who detects the problem?

Answer 12

Oxygen-Don Mask

Question 13

BLEED AIR, AIR CONDITIONING, PRESSURIZATION

What is the oxygen mask donning procedure?

Answer 13

Headset……………….Remove
Oxygen mask …………..Don
If smoke or fumes are present:
Regulator (if required)……EMERGENCY
• Pressurizes mask to prevent smoke from entering mask.
Communications……………..Establish Headset…………….ON
HOT Mic…………..OFF
• Utilize interphone switch for crew communications.
MASK/MIC switch………………………MASK

FSM 2.1.23

Question 14

Will the deice boots operate with the BLEED switches in the OFF position?

Answer 14

YesA constant supply of de-icing bleed air is provided by the bleed system of each engine, regardless of engine bleed control switch position.SDM 13-6

Question 15

When must the REF SPEEDS switch be selected to INCR?

Answer 15

If ice is adhering to wing leading edges or wingtipsFSM 7.2.12

Question 16

Taking off into icing conditions is defined as reaching icing conditions by what altitude?

Answer 16

ACCELERATION HEIGHTFSM7.2.13

Question 17

When will the Engine Intake HTR light illuminate?

Answer 17

· Engine intake bypass door is open AND · Engine is running (oil pressure sensor) AND · SAT is below approximately 15°C (temperature sensor) AND · 115-volt variable AC power is availableSDM 13-4

Question 18

When are the deice boots required to be used?

Answer 18

Wing and Tail Leading Edge Pneumatic Deicing Boot system, if installed, shall be activated: - At the first sign of ice formation anywhere on the aircraft, or upon annunciation from an ice detection system, whichever occurs first; and - The system shall either be continued to be operated in the automatic cycling mode, if available; or the system shall be manually cycled as needed to minimize the ice accretions on the airframe. AD FSM 1.5.2

Question 19

When may the wing and tail deicing boots be turned off?

Answer 19

The AFM requires, when clear of icing conditions, the deice boots to continue to be operated for two complete cycles before selecting OFF. FSM 1.5.2