What must be done after using oxygen equipment?

After using oxygen equipment, it is essential to properly inspect, recharge, and clean it to ensure that it remains effective and safe for future use. This process is critical because oxygen equipment is vital for maintaining crew safety, especially in high-altitude or emergency situations where supplemental oxygen is required.

Inspecting the equipment ensures that there are no signs of wear, damage, or malfunction that could impair its functionality. Cleaning the equipment removes contaminants that could pose a risk during subsequent uses. Additionally, recharging systems, like oxygen tanks, is important to ensure that they maintain the correct pressure and supply levels. Regular maintenance following these practices not only prolongs the life of the equipment but also enhances the safety of aircrew members.

The other options may imply some level of care, but they do not encompass the comprehensive requirement for maintenance that includes inspection, cleaning, and recharging, which is essential for operational readiness and safety.