Fire Protection

Question 1

How many fire detection loops are installed on each engine?

Answer 1

Two, dual loops mounted in parallel

Question 2

How many firex bottles are available for an engine fire?

Answer 2

Two

Question 3

What type of Halon is in the engine firex bottle?

Answer 3

Halon 1301 pressurized with dry nitrogen

Question 4

How is the engine fire detected by the crew?

Answer 4

Appropriate ENG FIRE PUSH switch/light illuminates
Fire bell sounds
EICAS warning message

Question 5

What occurs when the ENG FIRE PUSH switch/light is pushed?

Answer 5

Fuel SOV closes
HYD SOV closes
Bleed air SOVs close
Generator is de-energized
Appropriate squibs are armed

Question 6

Can we blow both bottles into one engine, if necessary?

Answer 6

Yes

Question 7

How many fire detection loops are inside the APU containment case?

Answer 7

Two, dual loops mounted in parallel

Question 8

How is an in-flight APU fire detected by the crew?

Answer 8

APU FIRE PUSH switch/light illuminates
Fire bell sounds
APU FIRE warning message on EICAS

Question 9

How many firex bottles are available for an APU fire?

Answer 9

One

Question 10

What type of extinguishing agent is used in the APU firex bottle?

Answer 10

Halon 1301 pressurized by nitrogen

Question 11

What occurs during an unattended APU fire on the ground?

Answer 11

APU ECU shuts down the APU
APU FIRE switch/light illuminates
Fire bell sounds
APU FIRE warning message on EICAS
5 seconds later APU bottle will discharge automatically

Question 12

What occurs during an APU fire in flight?

Answer 12

APU ECU shuts down the APU
APU FIRE switch/light illuminates
Fire bell sounds
APU FIRE warning message on EICAS

Question 13

How many smoke detectors are there in the aft cargo compartment?

Answer 13

Two

Question 14

How many smoke detectors are in the fwd cargo compartment?

Answer 14

Three

Question 15

What are the flight deck indications of cargo smoke?

Answer 15

Triple chime
Master warning flashers
"Smoke" aural
SMOKE (AFT/FWD) CARGO warning message
Either FWD or AFT CARGO SMOKE PUSH switch/lights illuminate

Question 16

How many firex bottles are there for cargo smoke?

Answer 16

Two:
Slow metered standard bottle released over approximately 60 minutes
and Quick discharge bottle

Question 17

How many smoke detectors are located in the lavatories?

Answer 17

One in the fwd

One in the aft

Question 18

What indication do we have for smoke in the lavatory?

Answer 18

Triple chime
Master warning flashers
SMOKE (FWD/AFT) LAV warning message

Question 19

What protection do we have for a lavatory waste compartment fire?

Answer 19

A firex bottle with heat sensitive capsules that will melt to discharge Halon 1301 directly into the waste compartment

Question 20

What indication will we get with a waste compartment fire?

Answer 20

None, unless it generates enough smoke to set off a smoke detector

Question 21

Fire Detection and extinguishing is provided in the…

Answer 21

L/R engine core sections and APU Compartment

Question 22

When the heat sensing elements are subjected to heat, the…

Answer 22

Resistance decreases

Question 23

The engine Firex bottles are located in the

Answer 23

Aft Equipment Bay

Question 24

The Lav Firex bottle is discharged by

Answer 24

Heat sensitive capsule autmoatically

Question 25

What 2 sub-systems comprise the Fire and Overheat Protection System?

Answer 25

Fire Overheat Detection System and Fire Extinguishing System

Question 26

What unit controls the Fire Protection, Smoke Detection, and Fire Ext. System?

Answer 26

FIDEEX Unit

Question 27

The FWD/AFT Cargo Bays have both Smoke det. and Fire ext. equipment. T/F

Answer 27

True

Question 28

Fire Overheat/Detection loop consists of 2 wires inside a metal sheath separated by_____

Answer 28

An Insulating Material(Thermistor)