Engine Fire Detection/Protection

Question 1

Engine Fire Detection

Answer 1

• ESS powered
• 2 fire loops in each engine (gaseous-type)
• Both loops must detect an overheat to get a fire indication unless one loop is inop

Question 2

How many bottles

Answer 2

• 2 fire bottles 1 shot per bottle

- Both shots can go in one engine or just one

Question 3

Fire protection powered by

Answer 3

HOT BATT BUS powered

Question 4

When the fire handle is pulled

Answer 4

• Fuel valve is closed
• Hydraulic valve is closed
• Bleed valve is closed

Question 5

APU Fire detection

Answer 5

• ESS powered
• 2 fire loops (gaseous-type)
• Both loops must detect an overheat to get a fire indication unless one loop is inop

Question 6

How many fire bottles does the APU have

Answer 6

• 1 fire bottle

Question 7

APU fire sequence

Answer 7

• APU EMER STOP button RED light illuminates
• Memory item complete APU EMER STOP BUTTON PUSH IN (WHITE light illuminates and RED light extinguishes)
• APU FIRE EXTINGUISHER button illuminates
• In the event the memory item is NOT completed, the APU EXTINGUISHER button will illuminate after 60 seconds of having an APU fire indication

Question 8

Smoke detection

Answer 8

• Each compartment has independent smoke detection system

Question 9

How man smoke detectors

Answer 9

• 3 forward smoke detectors
• At least 2 must be in agreement in order to generate FWD CARGO warning / same as AFT CARGO
• After smoke is detected, air circulation fan automatically turns off and the ventilation outflow valve closes

Question 10

Cargo compartment how many bottles

Answer 10

• 2 fire bottles

- Able to extinguish in either of the compartments

Question 11

Smoke indication in flight

Answer 11

• Push button 1st time - high rate bottle fires then low rate bottle fires after 60 seconds

Question 12

Smoke indication on ground

Answer 12

• Push button 1st time - high rate bottle fires and low rate bottle arms
• Push button 2nd time - low rate bottle fires

Question 13

Smoke indication in flight

Answer 13

• Push button 1st time - high rate bottle arms
• Push button 2nd time - high rate bottle fires
• Push button 3rd time - low rate bottle fires (if not pushed will fire after 60 seconds)

Question 14

No Smoke indication on ground

Answer 14

• Push button 1st time - high rate bottle arms
• Push button 2nd time - high rate bottle fires and low arms
• Push button 3rd time - low rate bottle fires
• The high-rate bottle will fire for a period of 60 seconds
• The low-rate bottle will fire for a period of 60 minutes

Question 15

Lav detection

Answer 15

• 1 smoke detector in each lavatory

Question 16

Nav fire protection

Answer 16

• 1 fire bottle in each waste container (forward and aft nav)
• Wax plug melts at a given temperature to discharge the bottle

Question 17

8-7-2 Rule Overhead Panel 8 lights

Answer 17

8 lights

• 1 Fire handle 1
• 2 Fire handle 2
• 3 Cargo smoke (FWD) extinguisher button
• 4 Cargo smoke (AFT) extinguisher button
• 5 APU extinguisher button
• 6 APU EMER STOP (top half of button)
• Engine 1
• Engine 2

Question 18

8-7-2 Rule Glareshield 2 lights

Answer 18

• 1 Master warning light (left)

- 2 Master warning light (right)

Question 19

8-7-2 Rule 2 Aural indications

Answer 19

• 1 fire bell

- 2 Triple Chime

Question 20

8-7-2 Rule EICAS message 7 lights

Answer 20

• 1 ENG 1 FIRE (CAS message)
• 2 ENG 2 FIRE (CAS message)
• 3 CARGO FWD SMOKE (CAS message)
• 4 CARGO AFT SMOKE (CAS message)
• 5 APU FIRE (CAS message)
• 6 FIRE (Engine 1 ITT gauge)
• 7 FIRE (Engine 2 ITT gauge)

Question 21

What happens if you hold the fire test more than 10 seconds?

Answer 21

• If APU is running it will shut down.