Engine Start

Question 1

What is the minimum pressure to do a cross bleed start?

Answer 1

You need 40-45psi

Question 2

under what condition would you get a BRL LH (RH) FAULT (FAIL) EICAS message on push back

Answer 2

When being pushed above 5kts and hydraulic system 1 or 2 is de-pressurazied.

Question 3

After start up if you get no oil pressure indication at normal RPM what do you do?

Answer 3

Shut down the engine.

Question 4

What are the Start Time cranking Limits on the Ground

Answer 4

90s on 10 off - Starts 1 - 2

90s on 5 Minutes off 3 - 5

Question 5

What are the Start Time cranking Limits in the Air

Answer 5

120s on 10s off - 1 - 2

120 on 5 Minutes off 3 - 5

Question 6

Dry Motor Cranking Limits

Answer 6

90s on 5 minutes off 1 Start

30s on 5 minutes off 2-5 starts

Question 7

When should you manually abort an engine start?

Answer 7

1. No ITT raise with in 30 seconds
2. No N1 indiction after starter cutout 50% N2
3. No Oil pressure by the time normal RPM is achieve.

Question 8

When you “Set” the MCDU in the Before Start to the Line what are you checking in the MCDU

Answer 8

1. Checking the routing and each way point.

2. Any speed and altitude restrictions.

Question 9

When checking the MFD in the before start flow, what are you checking

Answer 9

1. Green Oil Level

2. Emergency Brakes Accumulator Level

Question 10

What do you communicate to ground crew during push back

Answer 10

1. Steering Off
2. Parking Brake off.
3. Ready for push back

Question 11

While using hand signals during push back, what does the brakes realease signal indicate to the push crew?

Answer 11

nose wheal steering is off and brakes are realize ready to push.

Question 12

The APU will always be shutdown after first engine start unless

Answer 12

1. Need it for performance

2. Anticipate long delays where engines will be shutdown.

Question 13

Wait how many seconds after starting the engine to shut APU

Answer 13

wait 30 seconds

Question 14

When can the captain perform an engine start?

Answer 14

With parking brake on aircraft not moving.

Question 15

How long must the engines be warmed up prior to takeoff thrust applied

Answer 15

2 minutes

Question 16

During low oil temperatures the engine must be shutdown when the oil pressure stays below minimum levels for how long

Answer 16

2 minutes

Question 17

Abnormal Start indications that will cause you to abort a start are:

Answer 17

1. Temp higher than 815c
2. No rise in N1 by the time the started cut out 50% N2
3. No Raise in Oil Pressure indication
4. No raise in ITT 30 seconds after engine start.
5. Hung Start - No Raise in N1 or N2

Question 18

What engine do you start first during a External High Pressure cart star

Answer 18

Start Engine #2 and turn on Hydraulic Pump #1 for outboard Brakes

Question 19

How long after N2 stabilizes should you shut down the APU?

Answer 19

30 seconds

Question 20

How do you know how much DUCT pressure is needed to a ground start?

Answer 20

Look at SOPM at the chart

Question 21

If the engine automatically shuts down after an engine start due to hot start but you don’t have a ENGINE EXCEEDENCE EICAS message how many more starts can you try.

Answer 21

2 more starts.

Question 22

How long may be required for the IDGs to stabilize and produce steady power in cold weather?

Answer 22

5 Minutes

Question 23

When do you need to look at the QRH when doing a start

Answer 23

1. Engine Ground High pressure cart start

2. Engine Battery Start

Question 24

When would you get a NO TAKEOFF FLAP Aural warning

Answer 24

When the Flaps positions are different from what the FMS has and your are doing the Takeoff Config check.

Question 25

What are the Times you need to reference the QRH for an engine start?

Answer 25

1. High Pressure cart start | 2. DC Power start

Question 26

The APU is always shutdown after engine start unless?

Answer 26

1. Needed for performance | 2. Anticipating Long delays

Question 27

After the 2nd engine start the N1 value can not be above or below what value?

Answer 27

- No more the +.5 | - No less than -.0

Question 28

What happens during an engine start at 50% N2

Answer 28

The Air Starter Control Valve closes the high pressure air.

Question 29

During an engine start your oil pressure should raise within

Answer 29

10 seconds

Question 30

What can cause a Hot Start?

Answer 30

1. To much fuel 2. Improper Ignintion 3. Not enough Air from air source 4. Tail Wind

Question 31

How Much thrust doe TO-1 give you and how Much Thrust does TO-2 give you?

Answer 31

1. TO - 1 -> 13,000lbs of thrust | 2. TO - 2 -> 11,700lbs of thrust

Question 32

How Much thrust doe TO-1 give you and how Much Thrust does TO-2 give you?

Answer 32

1. TO - 1 -> 13,000lbs of thrust | 2. TO - 2 -> 11,700lbs of thrust

Question 33

Whats an ENG REF ECS DISAG?

Answer 33

You need to fix the bleed source. Most likely APU is still on and you told it ECS ON in the MCDU

Question 34

During an unpressurized takeoff, when do the bleeds open back up?

Answer 34

500, feet.

Question 35

On Push back what can happen if you get pushed back to fast?

Answer 35

Being pushed back at faster than 5kts you get Brake Fault and the Auto Brakes will cliff off. and hydraulic system.

Question 36

What items does the FADEC abort a start?

Answer 36

1. Hot Start 2. Hung Start 3. No Light off

Question 37

What is the Engine start sequence?

Answer 37

1. N2 Starts turning 2. 7% N2 Ignition -> 2 Sets of ignitors but only use 1 3. Fuel Flow Introduces about 20% N2 4. Light off 5. 35% N2 N1 starts to raise 6. 50% N2 ignition goes away and starter controlled valve. closes.

Question 38

When do you know you have a normal start

Answer 38

ITT Red Mark jumps on the ITT gauge

Question 39

Conditions of a Hot Star

Answer 39

``` High than normal Fuel Flow Rapid Raising ITT ---------------------------------------- 1. To much Fuel 2. Improper Ignition 3. Interrupts AirFlow ```

Question 40

Conditions of Hung Start

Answer 40

- N1 just hangs there needle does not go anywhere | - Engine Gets hung up before it becomes self sustained.

Question 41

No Light OFF

Answer 41

- Fuel Flow goes into the engine but does not light off. | - Bad Ignitor

Question 42

FADEC will not introduce fuel on a start unless the ITT temperature is?

Answer 42

120 degrees.

Question 43

When would you get APU SHUTTING DOWN white status message?

Answer 43

When you move the APU Knob to OFF. It takes 1 minute shutdown. Cool down period. Bleeds are taken away right away, electrics stay for 1 minute while its shutting down.