Rotary Switch Test (Fire System Test)

Question 1

Using the Rotary Switch Test for the Fire System Test, what are you actually testing?

Answer 1

Testing the functionality of the fire detection circuits and fire warning annunciators to ensure they work correctly.

Note:
The test ensures that the fire detection sensors both thermal and optical in the engines are functioning correctly.

Question 2

What happens when you push the Fire Switch?

Answer 2

1. Closes Firewall shutoff valve
2. Closes Hydraulic shutoff valve
3. Closes Bleed Air shut off valve
4. Arms the Fire Bottles

Question 3

When testing the Fire System via the Rotary test switch, are you checking the actual fire bottle level?

Answer 3

NO.

Question 4

Will the Fire system work in Emergency?

Answer 4

YES the will as its part of the essential system which are designed to work in EMERGENCY

Question 5

Can you despatched with an empty fire bottle?

Answer 5

NO.

They need to be fully charged for the aircraft to be airworthy.