Engine Starting

Question 1

During start, advance the thrust lever at _____ N₂

to initiate fuel flow and activate ignition system.

Answer 1

During start, advance the thrust lever at 8-10% N₂

to initiate fuel flow and activate ignition system.

Question 2

Abort the engine start in no ITT within _____., or

if ITT exceeds _____.

Answer 2

Abort the engine start in no ITT within 10 sec., or

if ITT exceeds 500^oC.

(Max start ITT is 700^oC)

Question 3

Check for N₁ indication between _____ N₂.

Abort the start if no indication by _____ N₂.

Answer 3

Check for N₁ indication between 20-25% N₂.

Abort the start if no indication by 25% N₂.

Question 4

The engine start cycle terminates at approximately

_____ N₂.

Answer 4

The engine start cycle terminates at approximately

38% N₂.

This can also bee seen by the:

Boost pump annunciator, green ignition light and start light extinguishing

Question 5

For a cross-generator start, the operating engine

should be set to _____ N₂.

CAUTION: Turbine speed greater than 50% N₂ on

the operating engine produces a generator output

that may damage the generator drive during the

second engine start.

Answer 5

For a cross-generator start, the operating engine

should be set to 49-50% N₂.

CAUTION: Turbine speed greater than 50% N₂ on

the operating engine produces a generator output

that may damage the generator drive during the

second engine start.

Question 6

_____ starter buttons illuminate during cross-

generator start.

Answer 6

Both starter buttons illuminate during cross-

generator start.