What does the semi-automatic mode in cabin altitude management allow?

The semi-automatic mode in cabin altitude management is designed to provide a balance between manual control and automated system management. When utilizing this mode, aircrew have the ability to manually select the desired cabin altitude as well as the rate of change to achieve that altitude. This flexibility is important as it allows for adjustments based on specific flight conditions, altitude changes, or potential emergencies that may require a tailored response to the cabin environment.

In contrast, fully automated systems wouldn't allow for such direct interaction and adjustments by the crew, leading to a more rigid approach in cabin pressure management. Other options suggesting complete deactivation of cabin controls or adjustments unrelated to altitude, such as cabin temperature, do not reflect the functionalities associated with semi-automatic mode. Thus, the focus on manual selection and controlled adjustments distinguishes the semi-automatic mode for effective management of cabin altitude.