What is the maximum negative differential pressure that the aircraft can handle?

The maximum negative differential pressure that the CRJ 200 can handle is -0.5 psi. This limitation is crucial for ensuring the structural integrity of the aircraft's fuselage during flight operations. The differential pressure is the difference between the pressure inside the cabin and the ambient atmospheric pressure outside. If negative differential pressure exceeds this limit, it could lead to structural damage due to excessive forces acting on the fuselage. Understanding this limitation is essential for maintaining the safety and airworthiness of the aircraft, particularly during descent when cabin pressure adjustments are made. This knowledge enables pilots and maintenance crews to ensure compliance with safety protocols while operating the CRJ 200.