What precaution must be taken before climbing on the ATG?

Before climbing on the ATG (Air Traffic Generator), it is crucial to ensure that the leveling jacks are extended. This is essential for maintaining the stability of the equipment while personnel are on it. Leveling jacks provide a firm foundation and prevent the equipment from tipping or swaying, which could lead to accidents or injuries. The proper deployment of these jacks not only safeguards the individuals operating on the ATG but also helps ensure the effective functionality and accuracy of any operations being conducted from that height.

Checking the weight limit is certainly important in other contexts, such as ensuring that the equipment can safely support the intended load. However, without properly extending the leveling jacks, the system is not secure, and the risk associated with climbing increases significantly. While other considerations, like ensuring the area is clear of personnel and obtaining permission before climbing, are relevant to safety protocols, the immediacy of the equipment's stability makes extending the leveling jacks the foremost precaution to take.