Step 1 – Aircraft preparation starts with people briefing and review of the procedures. The tests are to be conducted in pre-identified dedicated areas that are free of obstacles, bright areas, knowing that the areas for engine start and for high power engine run-up might be different as the latter requires additional safety distances. These areas around the aircraft can be identified utilizing ground markings showing minimum distances. Aircraft should also be facing the wind, adequate chocks must be positioned and fire extinguishers must be available and reachable rapidly. Cockpit preparation is a key element. This includes for example seats’ adjustments to have feet well positioned on the brake pedals, and clear communication between the engineers. Lack of adherence to best practices during aircraft preparation is one of the most common safety escapes.

Step 2 – Engine Start. The starting sequence commences with a full engine fire systems test. Good knowledge of the engine limits/parameters, such as the ITT (Interstage Turbine Temperature) limits is recommended.

During the Step 3 – Engine run-up, the operating crew must always have one hand on the Power Levers, ready to reduce to ground idle at any time, and a good knowledge of expected engine and aircraft systems parameters values. An external visual reference point is to be taken and continuously monitored to detect any displacement of the aircraft.

If a Step 4 – Taxi is to be performed, note that the carbon brakes efficiency increases with temperature. The ground clearance is to be confirmed all along the taxi, ensuring a knowledge of airport charts and of tower communication.

Lastly, for Step 5 – Engine shut down, as a reminder, the last wet motoring is to be followed by a dry motoring to mitigate the risk of hot start and engine fire.