Pneumatics

Question 1

The AMS automatically controls which of the following?

Answer 1

Bleed control,

air conditioning control,

hot air leak detection,

crew O2 monitoring,

wing/engine ice protection

Question 2

The AMS controller is a _______ channel controller.

Answer 2

dual

Question 3

True or False: During normal operations, the left engine would supply bleed air
Pack 1 while the right engine would supply bleed air to Pack 2.

Answer 3

True

Question 4

True or False: During high power settings, bleed air is usually supplied by the low
stage port.

Answer 4

True

Question 5

Engine bleed air is provided by _______ compressor ports on each engine.

Answer 5

2 [6th and 10th]

Question 6

What determines when the high pressure bleed port opens and closes?

Answer 6

AMS controller

Question 7

The engine bleed valve located in the _______ regulates pressure from the engine
bleed system.

Answer 7

nacelle

Question 8

True or False: Engine fan air can be used on the ground to cool the hot bleed air
when sufficient RAM air is not available.

Answer 8

True

Question 9

Prior to entering the bleed supply lines, bleed air temperature is cooled by
_______.

Answer 9

Pre-cooler

Question 10

The BLEED 1 button controls the bleed air for_______.

Answer 10

Engine 1

Question 11

True or False: The APU can only be used for bleed air while on the ground.

Answer 11

False

Question 12

Bleed air from the APU may be used for which of the following?

Answer 12

Air conditioning and pressurization up to 15,000 ft, and engine starting up to 21,000 ft

Question 13

The XBLEED valve allows:

Answer 13

Air from one side of the system to be directed to the other side of the system

Question 14

True or False: The aircraft has separate external pneumatic ground ports for
engine starting and pre-conditioned air.

Answer 14

True

Question 15

The APU can be used as a source of bleed air for which of the following?

Answer 15

Air conditioning and pressurization up to 15,000 ft, and engine starting up to 21,000 ft

Question 16

True or False: The XBLEED open/close auto-logic is handled by the AMS
controller as long as the XBLEED switch on the overhead panel is selected OUT
(black and white striped advisory light in the switch is illuminated).

Answer 16

False [IN for AUTO]

Question 17

True or False: The engine or APU bleed switches on the AIR COND/PNEUMATIC
panel will illuminate a red crosshatch in the top half of the switch if the ODS
detects a bleed leak.

Answer 17

False (Amber striped bar 2.2 Vol 1)

Question 18

Which of the following areas is NOT monitored by the Overheat Detection System
(ODS)?

Answer 18

Entire pneumatic system ducts are monitored:

Engines
APU
Anti-Ice bleed ducts
Packs

Question 19

True or False: Engine bleed air is supplied from the 2nd and 4th stage bleed ports.

Answer 19

False [6th and 10th]

Question 20

True or False: With both ODS loops operational, both loops must detect a bleed air
leak before an EICAS message is displayed.

Answer 20

True

Question 21

If one channel of the AMS controller fails, which of the following occurs?

Answer 21

Control automatically transfers to the other channel without interruption

cyan fault message