Actually, the only way to really replicate everything that could happen in the flight is through a simulator, not in the airplane.
On April 11th, 2017. See this statement in context.
On April 11th, 2017. See this statement in context.
April 11th, 2017 / 11:15 a.m.
Director General, Aviation Safety Oversight and Transformation, Department of Transport
Actually, the only way to really replicate everything that could happen in the flight is through a simulator, not in the airplane.
See context to find out what was said next.