What is required before moving through doorways or gates?

Before moving through doorways or gates, it is crucial to stop and ensure that they are completely open and secure. This requirement is vital for safety reasons; if the door or gate is not fully opened or is obstructed, there is a risk of collision or accidents that could harm personnel or damage equipment. Stopping to verify the status of the doorway or gate helps to confirm that the path is clear and reduces the potential for dangerous situations.

While signaling to the crew, checking weather conditions, and performing a visual inspection of the area may be important in other contexts, the specific step of ensuring that doorways or gates are properly opened and secured is essential in this scenario to prevent immediate hazards related to movement through these openings.