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If smoke enters the cockpit during an engine fire, which immediate actions should be taken?

  • A

    Switching off the master switch and the ignition.

  • B

    Switching off the heating and the ventilating system.

  • C

    Switching off the pitot and front window heating.

  • D

    Switching off the avionics and the cabin lighting.

In the event of smoke entering the cockpit during an engine fire, it's crucial to take immediate and appropriate actions to ensure safety and mitigate the situation.

Firstly, "Switching off the master switch and the ignition" can shut down the electrical systems and the engine, potentially stopping the source of the fire. However, it would also result in a loss of power to critical systems, which might not be immediately necessary or advisable unless the fire is directly related to the electrical system or the engine itself.

Secondly, "Switching off the pitot and front window heating" does not address the immediate problem of smoke in the cockpit because these systems are not typically related to the spread of smoke into the cockpit.

Thirdly, "Switching off the avionics and the cabin lighting" might reduce some electrical load and potential sources of ignition. However, it doesn't directly address the smoke entering the cockpit or the fire itself. Maintaining avionics is generally important for communication and navigation, so this action is not a priority unless there is evidence that the avionics are contributing to the fire.

Finally, "Switching off the heating and the ventilating system" will stop the flow of smoke into the cockpit by shutting down systems that can distribute smoke from the engine compartment into the cabin. This is crucial in maintaining visibility and ensuring that the crew can breathe.

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