Fire Protection

Question 1

What are the indications of an engine fire?

Answer 1

• both master warning lights
• engine fire warning light
• fuel control switch lights
• EICAS FIRE MSG

Question 2

What will unlock an engine fire switch?

Answer 2

• fire warning
• fuel control switch in CUTOFF
• override switch/button

Question 3

What happens when you pull an engine fire switch?

Answer 3

• closes engine and spar fuel valves
• closes engine bleed valve
• trips engine generator
• shuts off HYD EDP
• arms both fire extinguishers on the related wing

Question 4

How many fire bottles for the engine are there?

Answer 4

two on each wing

Question 5

What type of fire detection do the engines have?

Answer 5

dual loop (“and” system)

Question 6

Will I get a fire warning for an engine overheat?

Answer 6

no, you would get an overhead warning

Question 7

What type of detection do I have for a cargo fire?

Answer 7

dual loops. 4 loops in each lower compartment, 16 in the main deck

It uses sample air from the center bleed air duct

Question 8

What happens when I push the CARGO FIRE ARMED switch for the main deck?

Answer 8

• enables main deck fire suppression
• turns off 2 packs
• turns off all airflow and heat to the main deck and lower cargo compartments
• closes master trim air valve
• configures equipment coming to the “closed loop” mode

Question 9

What happens when you push the CARGO FIRE ARMED switch for the FWD or AFT?

Answer 9

• turns off 2 packs
• arms lower lobe cargo compartment fire extinguishers
• closes master trim air valve ad cuts off all airflow to the lower cargo compartments
• configures equipment cooling to the “override” mode

Question 10

What happens when you press the CARGO FIRE DEPRESS/DISCH switch?

Answer 10

Main Deck: initiates cabin depressurization to a cabin altitude of 25,000

FWD or AFT: initiates fire extinguishing (2 bottles immediately, other 4 after a brief delay or upon touchdown for a total of 334 minutes)