What is the correct action if the aircraft requires an airstart?

In the event that an aircraft requires an airstart, the correct action is to wait for clearance from the captain. This is vital for several reasons. First, the captain is ultimately responsible for the safety and operation of the aircraft. Before initiating any procedure such as an airstart, the captain needs to assess the situation, evaluate the safety protocols in place, and decide the best course of action based on the aircraft's current status, location, and environmental factors.

Additionally, waiting for clearance ensures proper communication and coordination among the crew, as they may need to prepare for any necessary emergency procedures or follow specific protocols that are dictated by the airline's standard operating procedures. It prevents premature actions that could complicate the situation or endanger the safety of the flight.

While informing passengers and activating emergency systems might seem important, those actions should be conducted only after the captain has provided the necessary clearance and directives. In emergency situations, clarity and order in communication are essential to ensure that all crew members are aligned and that passengers are kept adequately informed without causing unnecessary alarm.