What is the first step in the abort start procedure?

The first step in the abort start procedure is to turn the Power Control Lever (PCL) to the OFF position. This action is crucial as it helps to immediately cut fuel supply to the engine, preventing any further combustion. By shutting off the fuel flow, the risk of an uncontrollable engine start or an explosion is greatly minimized. This safety measure is essential for establishing control over the situation right from the onset of an abort start scenario.

The procedure follows a logical sequence designed to prioritize safety and ensure that the engine is not producing thrust during a malfunction. The other options do not align with the intention of averting potential hazards. For instance, keeping the PCL ON or in IDLE may still allow fuel to enter the engine, while setting it to RESET can be inappropriate as it does not address the immediate need to halt the starting process effectively. Overall, ensuring that the PCL is turned OFF is fundamental in maintaining a safe operational environment.