Ejet E1 - AMS

Question 1

Which systems composes Air Management System (AMS)?

Answer 1

Pneumatic and Environmental Control System (ECS)

Question 2

How the pilot is advised when an engine or APU bleed leak is detected?

Answer 2

An amber striped bar is illuminated on the respective bleed button

Question 3

What happens to OFV when the CABIN ALTITUDE selector knob is moved to DOWN position?

Answer 3

The outflow valve is manually CLOSE, provide the PRESSURIZATION MODE selector knob is set to MAN position

Question 4

What happens when the CABIN ALTITUDE selector knob is moved to UP position?

Answer 4

The outflow valve is manually OPEN, provide the PRESSURIZATION MODE selector knob is set to MAN position

Question 5

When the PRESSURIZATION MODE selector is set to LFE CTRL the pressurization system will operate in Manual or Automatic mode?

Answer 5

The pressurization system will remain in AUTOMATIC mode.

Question 6

What happens to the LFE indication on EICAS when LFE selector is momentarily selected to DOWN or UP position?

Answer 6

The LFE decreases or increases in 100 ft increments.

Question 7

Whats is required to have the LFE be displayed in the “cabin box” on EICAS?

Answer 7

The flight plan on MCDU must be closed.

Question 8

If the “HI FIELD” label is displayed on EICAS what does it indicate?

Answer 8

Cabin Altitude Warning set point is shifted from its original value of 9.70O ft indicating the airplane is in High Altitude operation mode.

Question 9

How the Bleed System is automatically configured during a single AMS pack operation?

Answer 9

Engine bleed valve associated to the inoperative pack is commanded to close and the crossbleed valve is commanded to open.

Question 10

What is the function of the APU Bleed Check Valve?

Answer 10

Prevents engine bleed air from flowing to the APU when engine bleed is the pneumatic source.

Question 11

If the APU Bleed Valve commanded open when the left engine bleed is available?

Answer 11

No

Question 12

If the APU Bleed Valve commanded open when the anti-ice system is required?

Answer 12

No

Question 13

Bleed air is provided to the Air Management System by the engines, or the APU. What is it used for?

Answer 13

• Environmental Control System (ECS)
• Engine Start
• Anti-ice system
• Water pressurization

Question 14

What is the function of the Engine Bleed Valve (EBV)?

Answer 14

Regulate the bleed pressure provide by engine bleed system.

Question 15

How is the bleed air temperature regulated?

Answer 15

It is regulated by the precooler and the Fan Air Bleed Valve which modulates fan air to cool the hot bleed air

Question 16

Which engine stages are sources of air to the Engine Bleed System?

Answer 16

9th (High stage) and 5th (Low stage)

Question 17

Which abnormal bleed operation conditions will make the system automatically shut down the affected bleed?

Answer 17

Detection of leak, overpressure or fail condition.

Question 18

How the bleed system is automatically configured if cross bleed fails OPEN?

Answer 18

The Engine Bleed #1 is commanded closed.

Question 19

Is it possible to have both the APU and the engines as bleed sources simultaneously?

Answer 19

No!

Question 20

Which conditions must be met to APU be the source of bleed air on the ground?

Answer 20

1) Ground speed bellow 50 kts
2) 30 s have passed after touchdown
3) REF ECS OFF and REF AI not ALL or single-engine taxi.

Question 21

Which pack adjust airflow and temperature of the cockpit and the passengers’ cabin?

Answer 21

Pack #1 => cockpit

Pack #2 => passengers cabin

Question 22

In which conditions the Gasper Shutoff valve is automatically commanded open?

Answer 22

Whenever the gasper air supply exceeds 35º C.

Question 23

Can the APU bleed be used for the anti-ice system operation?

Answer 23

No!

Question 24

When the Recirculation Fans are commanded OFF?

Answer 24

Both packs are OFF
During cabin warm-up with APU as bleed source
Cargo bay fire is detected
DUMP button is pressed
Smoke is detected in the recirculation bay.

Question 25

What is the main function of the Emergency RAM Air ventilation?

Answer 25

Provides air ventilation in case of pack shutdown or for smoke removal.

Question 26

When the flight deck pack emergency RAM air ventilation valve is commanded OPEN?

Answer 26

Only if both ECS packs are OFF and the plane is below 25.000 ft.

Question 27

Why the PACK 1 OFF message is displayed on the ground during engine start?

Answer 27

Because of the RAM Air valve BIT..

Question 28

The AMS disregards the ECS OFF signal when the airplane is above what altitude?

Answer 28

15.000 ft

Question 29

Considering the FMS initial flight level setting, which are the two differential pressures provided by the CPCS?

Answer 29

• 7.8 psi if cruise level is < FL370

- 8.4 psi if cruise level is >= FL370

Question 30

The CPCS automatically identifies when the airplane is operating at airports above ….. Ft.

Answer 30

8.000 ft

Question 31

The CABIN ALTITUDE HI EICAS message trigger point is automatically adjusted to a plus ….. Ft AGL when the operation is at an airport above ….. ft.

Answer 31

500 ft / 9.400 ft

Question 32

When the DUMP function is activated, the CPCS system automatically controls the OFV to maintain the cabin altitude rate of climb at …. ft/min up to …. ft

Answer 32

2000 ft/min up to 12.400 ft. Above it, normal leak.

Question 33

What happens when the DUMP button is pushout in Manual Mode.

Answer 33

The DUMP funtion will not be available but the PACKS and recirculation fans will be turned OFF.

Question 34

What are the CPCS flight modes?

Answer 34

GROUND, TAXI, TAKEOFF, CLIMB, CRUISE, DESCENT AND ABORT

Question 35

When the CPCS ABORT mode is activated?

Answer 35

When the airplane stops climb and immediately starts descending (no cruise mode activated) and altitude < 10.000 ft or < AFE + 5.000 ft