Engine Start

Question 1

How does engine start begin?

Answer 1

by selecting the GRD position .

Question 2

What does GRD do?

Answer 2

opens start valve, closes engine bleed valve, arms the selected igniter and allows bleed pressure to rotate the starter.

Question 3

Once the engine accelerates to ____N2 or _____, the start lever is positioned to idle.

Answer 3

25%; max motoring N2.

Question 4

What does start lever IDLE position do?

Answer 4

opens the spar and engine fuel valves

Question 5

Initial FF indications can lag by up to _______.

Answer 5

2 seconds.

Question 6

What happens at ~ 56% N2?

Answer 6

power is removed from the START switch solenoid. ENGINE START switch returns to AUTO; engine bleed valve returns to selected position; start valve closes; start valve open light goes out.

Question 7

What does the EEC monitor during ground starts?

Answer 7

engine parameters for hot starts, wet starts, engine stall and EGT exceedances.

Question 8

If a hot start is detected what happens?

Answer 8

EGT box flashes white; depending on software, ignition and fuel flow are automatically shut off for these faults. .

Question 9

Ignition and fuel flow are terminated during start when?

Answer 9

EGT exceeds start limit.

Question 10

What happens in a wet start?

Answer 10

EEC auto shuts off ignition and fuel flow 15 seconds after start lever is moved to IDLE.

Question 11

If no EGT after 15 seconds after start lever has been moved to IDLE, what happens?

Answer 11

ECC recognizes wet start and shuts off fuel and ignition.

Question 12

With normal APU start, which engine is started first?

Answer 12

right side

Question 13

In start phase, move start lever to IDLE when:

Answer 13

N1 movement; 25% N2 or Max motoring and N2>20%

-Max motoring N2 accel

Question 14

When is a battery start req’d?

Answer 14

Elec AC power source is not avail.

Question 15

What needs to be checked before start?

Answer 15

anti-collision on; both PACK switches OFF and IGN is in IGN R.

Question 16

What engine is started first for battery start?

Answer 16

engine 1

Question 17

Battery start: Which engine indications are shown until EECs are powered?

Answer 17

N1, N2 and Oil QTY.

Question 18

For external air start, which engine is started first?

Answer 18

No 1 first to min risk to gnd personnel.

Question 19

For crossfeed start, how should the air panel be set?

Answer 19

Engine bleeds on; APU bleed off; pack switches OFF, ISO valve AUTO.

Question 20

Crossfeed start: How far forward should thrust lever be positioned?

Answer 20

Until duct pressure reads 30 PSI.

Question 21

In flight start conditions to start this way:

Answer 21

N1 rotation; no fire indication; no abnormal airframe vibration.

Question 22

Inflight: a _______ start is req’d if engine shut down more than 1 hour.

Answer 22

crossbleed

Question 23

Inflight: Where should the ENGINE START switch be placed for inflight windmill start?

Answer 23

FLT

Question 24

Inflight start: move start lever to IDLE at _______.

Answer 24

N2 is at or above 11%. Monitor to ensure EGT does not exceed 725C.

Question 25

Inflgith start: Crossbleed needs min duct pressure of ______psi.

Answer 25

30 psi

Question 26

Inflight crossbleed start: move ENGINE START switch to _____.

Answer 26

GRD

Question 27

Why would you abort an in-flight start?

Answer 27

No EGT w/in 30 seconds; N1 or N2 does not increase or increases very slowly after EGT increase; no oil indication by time engine is at idle., EGT rapidly rising to exceed start limit;

Question 28

How do you abort start?

Answer 28

1. Move start lever to CUTOFF
2. If engine start switch remains in GRD, motor for 60 seconds then move it to AUTO.
   - If switch already in AUTO, wait until N2 is below 20% and the select GRD position for 60 seconds then back to AUTO.

Question 29

T/F: Engine limit protection in alternate mode is the same as normal mode for the EECs

Answer 29

false

Question 30

T/F: Dispatch is permitted with ENGINE CONTROL light (next to EECs) on.

Answer 30

false

Question 31

If engine oil temp is in amber for more than _____minutes, the engine must be shut down.

Answer 31

45 min

Question 32

T/F: You may takeoff if OIL PRESS is in amber band.

Answer 32

false

Question 33

With a REVERSER light illuminated, can reverse thrust be expected on landing?

Answer 33

Yes, expect normal operation.

Question 34

If any reverse thrust sleeve has moved from the stowed position, the EECs will prevent power above ______

Answer 34

idle