Block 2: Powerplant-A. Safety

Question 1

Danger areas during engine operation?

Answer 1

Exhaust velocity
Temperature
Air intake
Noise

Question 2

Safe distance from intakes during MIL?

Answer 2

9 FT radius.

Question 3

Safe distance from intakes during MAX?

Answer 3

25 FT radius.

Question 4

How long after engine shutdown is the area immediately aft of the tailpipes hazardous?

Answer 4

For 15 minutes.

Question 5

Safe distance from directly behind exhaust at idle is?

Answer 5

115 feet.

Question 6

Safe distance from directly behind exhaust at maximum power is?

Answer 6

925 feet.

Question 7

What velocity does the APU exhaust reach at the at the most center point.

Answer 7

142 MPH from exhaust to the deck.

Question 8

What temperature does the APU exhaust reach?

Answer 8

328-350 degrees Fahrenheit.

Question 9

At a 19 inch diameter what is the speed of the exhaust?

Answer 9

24 MPH

Question 10

At a 19 inch diameter what is the temperature rang of the exhaust?

Answer 10

250 to 300 degrees Fahrenheit.

Question 11

How should be the most aware of the APU when it’s running?

Answer 11

Anyone working underneath the aft section of the aircraft.

Question 12

When fueling or de-fueling at what distance should you be from operating airborne type radio or air radar equipment?

Answer 12

100 feet.

Question 13

When fueling or de-fueling at what distance should you be from ground radar equipment?

Answer 13

300 feet.

Question 14

When maintenance is being done on an (ARS) pod what should be checked?

Answer 14

Ensure that the guillotine is not armed or loaded with CAD’s.

Question 15

Danger areas during engine operation?

Answer 15

Exhaust velocity
Temperature
Air intake
Noise

Question 16

Safe distance from intakes during MIL?

Answer 16

9 FT radius.

Question 17

Safe distance from intakes during MAX?

Answer 17

25 FT radius.

Question 18

How long after engine shutdown is the area immediately aft of the tailpipes hazardous?

Answer 18

For 15 minutes.

Question 19

Safe distance from directly behind exhaust at idle is?

Answer 19

115 feet.

Question 20

Safe distance from directly behind exhaust at maximum power is?

Answer 20

925 feet.

Question 21

What velocity does the APU exhaust reach at the at the most center point.

Answer 21

142 MPH from exhaust to the deck.

Question 22

What temperature does the APU exhaust reach?

Answer 22

328-350 degrees Fahrenheit.

Question 23

At a 19 inch diameter what is the speed of the exhaust?

Answer 23

24 MPH

Question 24

At a 19 inch diameter what is the temperature rang of the exhaust?

Answer 24

250 to 300 degrees Fahrenheit.

Question 25

How should be the most aware of the APU when it’s running?

Answer 25

Anyone working underneath the aft section of the aircraft.

Question 26

When fueling or de-fueling at what distance should you be from operating airborne type radio or air radar equipment?

Answer 26

100 feet.

Question 27

When fueling or de-fueling at what distance should you be from ground radar equipment?

Answer 27

300 feet.

Question 28

When maintenance is being done on an (ARS) pod what should be checked?

Answer 28

Ensure that the guillotine is not armed or loaded with CAD’s.