Engie/APU

Question 1

What kind of engine does the 717 have and how much thrust

Answer 1

BR715

21000LBS

Question 2

Start Duty Cycle Limitations

Answer 2

3 Start attemps with a maximum of 3 mins duration each
15 seconds is required between start attempts
Allow 15 mins of starter cooling before further start attempts are made

Question 3

Ground Engine auto start requirements

Answer 3

The auto start includes an automatic 30 second engine montoring delay before fuel is introduced.

Auto start also includes a TGT protection threshold and will not allow fuel introduction unless the resoective TGT is below 150 c

IGNITION Switch- AUTO
ENG START SWITCH - Pulled
FUEL SWITCH- ON

Question 4

Reasons for auto abort during ground engine start (6)

Answer 4

Auto start automatically abort and alert the crew.

1. Hung start
2. Start Duty time exceeds 3 min
3. Hot start
4. Loss of N2 Input
5. Failure of both channels of ECC
6. Fuel on condition not satisfied TGT above 150

Question 5

Inflight starts are all…..

Answer 5

Manual Starts

Question 6

Auto Abort start protection in the air

Answer 6

Not provided because all inflight starts are manual

Question 7

Engine warm up requirements (2)

Answer 7

1. No warm up is required if engines have been shut down for 2 hours or less
2. A 3 min warm is required if engines have been shut down for more than 2 hours

Question 8

Engine cool down requirements (1)

Answer 8

Engine cool down of 3 mins required before shutdown. EAD Engine cool message will apear on EAD

Question 9

STANDARD DAY, SEA LEVEL, ENGINE INDICATIONS AFTER STABLE START

Answer 9

EPR- 1.0
N1- 20%
TGT- 400
N2-60%
FF600-700
OIL PRESS- 45

Question 10

What is FADEC

Answer 10

Full authority digital engine control - controls functions form start to shutdown

Question 11

3 main components of FADEC

Answer 11

1. Throttle
2. Throttle module
3. Electonic engine control

Question 12

What is the purpose fo the EEC

Answer 12

Incorporates an automatic relight funtion armed from engine start to shutdown

Question 13

What causes activation of BOTH automatic ignition systems (4)

Answer 13

1. ) Combustor instability
2. ) Significant Water ingestion
3. ) Significant ice ingestion
4. ) Flameout

Question 14

When is a single ignition system automatically energized

Answer 14

For 60 seconds after ENG ant-ice switch has been selected on

Question 15

How do you use emergency thrust

Answer 15

Push the thrust levers through the mechanical gate
EPR will still be displayed, however, thrust management will be based on N1
ATS will disconnect automatically and the Qrh Should be referenced for re-engagment

Question 16

Thrust limits achieved at the forward throttle gate should be referred to as

Answer 16

Maximum power

Question 17

EMERGENCY THRUST =

Answer 17

MAXIMUM POWER

Question 18

When will Reversers deploy

Answer 18

The reverser will only deploy when the respective engine is running. If one engine is inoperative the other can deploy for 30 seconds

Question 19

What indications do you get when the reverser is out of the stowed position

Answer 19

Amber reverser inlock indication inside the EPR arcs on the EAD

Question 20

What indications do you get when the reversers are 90 % deployed

Answer 20

Green REV is displayed on ther EPR ARC

Question 21

What happens if reverser deploys in-flight

Answer 21

EEC will automatically reduce the thrust to idle on affected engine and re REV will be displayed on the EPR.

However built in safety features should prevent it.

Question 22

How to deploy EMERGENCY REVERSE Power

Answer 22

Is obtained by pulling the levers through a mechanical gate and holding them in place

Question 23

What is the risk in using EMERGENCY REVERSE POWER

Answer 23

Engine damage can occur and maintenance inspection is required

Question 24

What indications do you have if you use EMERGENCY REVERSE thrust

Answer 24

AMBER REV alerts appear on the EAD in the EPR exceedance postion while green rev remains inside

Question 25

ENG EXCEEDANCE RESET Switch

Answer 25

When pressed, reset and exceedance on EPR,N1, TGT AND N2 Primary engine synoptic

Question 26

APU Starter Duty Cycle (2)

Answer 26

1. 3 consecutive start attempts

2. Wait 30 min prior to futher start attempts

Question 27

Where is APU fuel supplied from

Answer 27

Right tank

Question 28

Can fuel be supplied from the left tank for the APU

Answer 28

Using Crossfeed

Question 29

What happens when the center tank fuel value is less than 800 lbs when using the APU.

Answer 29

Using the center tank pumps alone can force air into the APU fuel line and cause a flameout or prevent a start

Question 30

If the center tank is used to supply fuel to the APU, what must be on

Answer 30

Both center pumos and Right main tank fuel boost pump should also be operating

Question 31

Does the APU have a start delay

Answer 31

Yes, 40 seconds to allows APU inlet door to open

Question 32

Is there a APU bleed air limitation

Answer 32

Yes, 2 MIN

Question 33

How do you verify APU shutdown is complete

Answer 33

When APU master switch is off, ensure inlet door closed by verifying the absence of the APU information block on the SD ENG display. Takes 1 minute after APU RPM begins decreasing

Question 34

Shutting down APU with External Power and without

Answer 34

WITH- EXT power switch or GROUND SERVICE ELC PWR switch must remain on until APU shutdown complete

Without- Batt switch and EMER PWR selector must remain on until APU shutdown is complete.

Question 35

What happens with a normal APU shutdown

Answer 35

Runs for aprox 17 seconds while the electrical stytem performs a no break power transfer (NBPT)

Question 36

When is the 17 second No Power Break transfer bypassed (2)

Answer 36

If the APU fire is detected

If the APU FIRE CONT toggle switch is moved to the OFF & AGENT ARM position or when the exterior ground APU toggle switch is moved to the SHUT OFF position

Question 37

When does the APU auto shutdown feature happen on the ground and in-flight

Answer 37

ON Ground- when conditions are present and could damage APU, auto shutdown and Amber APU AUTO SHUTDOWN alert is displayed

In-Flight - Auto shutdown for APU OVERSPEED or an APU COMPARTMENT FIRE. IF a APU FAULT condition occurs in-flight, the APU automatically shuts down 10 mins after landing, unless shutdown sooner by pilot.