What is the maximum cabin pressure differential?

The maximum cabin pressure differential for the King Air 350 is indeed 6.0 psi. This specification is crucial for safe operation, as it dictates the maximum difference in pressure between the cabin and the outside atmosphere during flight. Maintaining the pressure within this limit helps ensure structural integrity and passenger comfort, as exceeding the specified differential can lead to compromised aircraft safety or failure of cabin components. Understanding this limitation is essential for pilots and maintenance personnel, as it directly impacts flight operations and emergency procedures, especially in high-altitude scenarios where external pressure is significantly lower.