Engine

Question 1

What happens when the ignition switch is selected to OVRD?

Answer 1

Activates both igniters on the ground or in flight.

Question 2

Can the igniters be turned off during flight?

Answer 2

The switch may be moved to the OFF position but the FADEC disregards the command.

Question 3

What controls the engine?

Answer 3

FADEC

Question 4

What controls engine starting and provides hung start, hot start, and no light off
protection?

Answer 4

The FADEC

Question 5

Does the FADEC provide engine start protection?

Answer 5

Only on the ground for a hot start, hung start, or no light-off.

Question 6

Is there protection for hot starts or hung starts during an in flight start?

Answer 6

No.

Question 7

How are engine thrust ratings controlled?

Answer 7

By the FADEC.

Question 8

What does the cyan line on the N1 gauge represent during approach? When does it
appear?

Answer 8

• The minimum N1 for bleed requirements in icing conditions.

* Configured for landing when anti-ice is ON

Question 9

How is the N1 limit indicated on the EICAS?

Answer 9

It’s a red tickmark on the N1 gauge

Question 10

What sources are available for engine starting?

Answer 10

• APU
• Ground source (huffer cart or air bottle)
• Opposite engine
• Windmill start

Question 11

Where is external air for an air start connected? Will the crew have any indication when
external air is connected?

Answer 11

• Lower section of the wing fairing area.

* Duct pressure is shown on the MFD STATUS page.

Question 12

What happens after 3 overspeed detection events within 30 seconds?

Answer 12

FADEC will not relight the engine

Question 13

What does WML mean on the engine indication?

Answer 13

• Windmilling engine
• The FADEC has detected a flame-out and the autorelight system is actuating to restart the
engine.

Question 14

Where can the crew check engine oil quantity?

Answer 14

On the MFD Status page.

Question 15

What is ATTCS? What controls it?

Answer 15

• Automatic Takeoff Thrust Control System
• Provides max thrust reserve (RSV) according to current rate previously selected via the
MCDU on the T/O Dataset page.
• ATTCS is controlled by the FADEC and is available on takeoff and go-around.
• The selection is made on the MCDU - TAKEOFF DATA SET MENU page and the indication
is displayed on the EICAS as follows:
- ATTCS label in white - system is armed.
- ATTCS label in green - system is engaged.
• The engagement only happens when the thrust levers reach the TOGA SET position.

Question 16

What will trigger an ATTCS event?

Answer 16

• N1 difference > 15% between engines
• Engine failure during takeoff or go-around
• Windshear detection

Question 17

How can the Pilot command RSV power?

Answer 17

By moving the thrust levers to MAX position whenever the ATTCS is armed.

Question 18

When is thrust reverse available?

Answer 18

Weight-on-wheels (ground use only).

Question 19

Thrust reverser must be stowed below what airspeed?

Answer 19

60 KIAS

Question 20

Thrust reverser must be stowed below what airspeed?

Answer 20

60 KIAS

Question 21

When is the thrust reverser displayed and what do the colors mean?

Answer 21

• Whenever the thrust reverser is not stowed.
• Green REV = Fully deployed
• Amber REV = In transition
• Red REV = Discrepancy between selected and actual reverser positions

Question 22

What position must the thrust levers be in to enable the thrust reverser trigger?

Answer 22

Idle.

Question 23

If the thrust lever is placed in the MAX REV position and then released, it does what?

Answer 23

It is spring loaded back to the MIN REV position

Question 24

What happens if a thrust reverser inadvertently deploys?

Answer 24

FADEC limits respective engine thrust to IDLE

Question 25

Can you deploy the thrust reverser on an engine that has failed on the landing roll?

Answer 25

Yes, up to 30 seconds following the failure, then it is locked out

Question 26

What is a Flexible Thrust Takeoff?

Answer 26

Reduced thrust takeoff based on assumed temperature.

Question 27

What is the maximum flex allowed?

Answer 27

25% reduction

Question 28

If you input a flex of 34 then change it to 39 how will it affect your N1 target?

Answer 28

It will drop your N1 target.

Question 29

When are reduced thrust takeoffs prohibited?

Answer 29

• The runway is contaminated with standing water, slush, snow, or ice
• Windshear is present or suspected
• Performance mandates no FLEX

Question 30

Can you FLEX with windshear advisories in effect?

Answer 30

No.

Question 31

Does the use of “wet” runway analysis numbers take into account the increased
stopping distance which occurs on wet runways?

Answer 31

Yes.

Question 32

If you turn the START/STOP to STOP in flight will the engine shutdown?

Answer 32

Not until the Thrust Lever is at idle.

Question 33

If you turn the ignition to OFF in flight will the engine shutdown?

Answer 33

No, FADEC disregards the ignition selector knob OFF position in flight.

Question 34

When is a crossbleed start used and what happens?

Answer 34

Used when the APU is not available, bleed air from one engine is used to start the other.

Question 35

What happens to the bleed pressure during a crossbleed start?

Answer 35

Bleed pressure will drop and does not require the thrust lever to be adjusted to maintain
pressure.

Question 36

Before applying takeoff thrust, allow the engines to warm up for a minimum of how
many minutes?

Answer 36

2 minutes

Question 37

How long must an engine cool down prior to shutting it down?

Answer 37

2 minutes

Question 38

What are the EICAS Engine Limit Display Markings?

Answer 38

• Red - Maximum and Minimum Limitations
• Amber - Caution Range
• Green - Normal Operating Range