What is the effect of exceeding an aircraft's maximum differential pressure?

Exceeding an aircraft's maximum differential pressure can result in potential structural damage because the aircraft is designed to withstand specific pressure differences between the inside of the cabin and the atmospheric pressure outside. When this differential pressure is exceeded, the stresses on the aircraft’s fuselage can become significant. This may lead to issues such as cracks, deformations, or even failure in more extreme cases, particularly if the aircraft is not built to handle that level of stress. Proper structural integrity is crucial for safe operation, making it essential to adhere to the maximum differential pressure limits set by the manufacturer. Understanding these limits is fundamental to both safety and operational protocols in aviation.