What action should be taken if an electrical fire occurs during flight?

In the event of an electrical fire during flight, the primary action to take is to turn off the battery and alternator to minimize power supply and prevent further electrical activity that could exacerbate the fire. Opening the cabin vents enhances airflow, which can help disperse smoke and fumes from the fire, improving the chances of cabin safety for the pilot and passengers. The urgency of landing immediately is crucial, as an electrical fire can rapidly escalate, posing significant risks to the aircraft's integrity and the safety of those on board.

The approach of turning on cabin heat, as suggested in one of the options, could potentially worsen the situation by introducing more heat, which is the opposite of what is needed during an electrical fire. Similarly, attempting to continue flying while monitoring battery levels does not address the immediate danger posed by the fire and neglects the critical need for a swift response. Therefore, the recommended response is to secure the electrical system and seek to land as quickly and safely as possible.