If the LH engine fire light remains on after moving the thrust lever to IDLE, which sequence should the pilot perform?

If the LH engine fire light remains on after moving the thrust lever to IDLE, which sequence should the pilot perform?

• A. LH thrust lever - CUTOFF, LH engine fire button PUSH, fire bottle - PUSH
• B. LH thrust lever - IDLE, LH engine fire button PUSH, fire bottle - PUSH
• C. Fire bottle - PUSH, LH engine fire button PUSH, LH thrust lever - CUTOFF
• D. LH engine fire button PUSH, LH thrust lever - CUTOFF, fire bottle - PUSH

Answer: (A)

The key idea here is to prioritize rapid isolation of the affected engine before delivering the fire-suppressant agent. When the LH engine fire light remains on, you want to stop any further fuel to the engine and cut off the source of combustion. Moving the thrust lever to CUTOFF accomplishes this, which reduces the fire risk and helps to contain the situation. After the engine is isolated, you then activate the fire suppression system by pressing the LH engine fire pushbutton. This action signals the system and starts arming the extinguisher. Finally, you discharge the extinguishing agent by pushing the fire bottle switch, delivering the suppressant directly into the engine. Starting with IDLE doesn’t cut off fuel flow, so it doesn’t address the fire as quickly. Discharging the bottle before isolating the engine could waste suppressant or delay effective shutdown. The sequence that cuts off fuel first, then initiates the fire pushbutton, then discharges the bottle aligns with standard emergency procedure and provides the fastest, most effective response to an persisting engine fire.

The key idea here is to prioritize rapid isolation of the affected engine before delivering the fire-suppressant agent. When the LH engine fire light remains on, you want to stop any further fuel to the engine and cut off the source of combustion. Moving the thrust lever to CUTOFF accomplishes this, which reduces the fire risk and helps to contain the situation.

After the engine is isolated, you then activate the fire suppression system by pressing the LH engine fire pushbutton. This action signals the system and starts arming the extinguisher. Finally, you discharge the extinguishing agent by pushing the fire bottle switch, delivering the suppressant directly into the engine.

Starting with IDLE doesn’t cut off fuel flow, so it doesn’t address the fire as quickly. Discharging the bottle before isolating the engine could waste suppressant or delay effective shutdown. The sequence that cuts off fuel first, then initiates the fire pushbutton, then discharges the bottle aligns with standard emergency procedure and provides the fastest, most effective response to an persisting engine fire.