If the residual cabin pressure light flashes, what should you do?

Prepare for the Aircraft Ground Exam with multiple choice questions and expert explanations. Enhance your knowledge and ace the test.

When a residual cabin pressure light flashes, the safety concept is that the cabin may still be pressurized or there could be a pressurization fault. Opening a door under those conditions can cause rapid, dangerous decompression and possible injury, because the outside air at altitude is far lower than inside the cabin. The safest action is to keep the door closed and notify the captain immediately so the flight crew can assess the situation, follow the proper depressurization or descent procedures, and coordinate any required emergency actions. Ignoring the issue or attempting to evacuate or relieve pressure by opening the door would be unsafe and inappropriate.