BBD-700 Fire Protection

Question 1

Where are the engine fire detection sensing elements located?

Answer 1

Accessory gear box
Engine core
Fixed cowl

Question 2

What extinguishing agent is used in the fire bottles?

Answer 2

Halon

Question 3

What five events occur when the ENG FIRE DISCH handle is pulled?

Answer 3

Fuel SOV closes
Hydraulic SOV closes
Bleed air SOV closes
AC VFGs taken off line
Fire bottles armed

Question 4

What happens when the APU DISCH is pulled?

Answer 4

Fuel SOV closes
Ignition shut off
Pneumatics shut off
APU electrics isolated
Fire bottles arm

Question 5

Does pulling the fire DISCH command an immediate engine shutdown?

Answer 5

No

Note: Immediate shutdown is via the ENGINE RUN switch

Question 6

If an APU fire is detected on the ground, what will the FADEC command after 5 sec?

Answer 6

Automatic shutdown of the APU

Question 7

Where are the smoke detectors installed on “green” configuration aircraft?

Answer 7

Forward avionics bay
Aft avionics bay
Baggage compartment
Avionics rack (5000 only)

Question 8

How is fire suppression for the baggage compartment, lavatories and cabin closets provided?

Answer 8

Portable fire extinguishers