When must the omega carabiner be physically checked for it to assure that it is locked?

The omega carabiner must be physically checked before winch up on the first flight after a change of the Aircraft Configuration (AC) to ensure that it is locked. This specific timing is critical because changes in the aircraft configuration may alter the conditions or requirements for securing safety equipment, including the carabiner. Ensuring that it is locked prior to engaging in the first flight under the new configuration serves as a crucial safety measure, helping to prevent accidents or malfunctions during operation.

Regular checks at other times, such as before every flight or at the end of the day, although important for ongoing safety, do not address the specific need to verify the security of the equipment right after a change that could impact safety protocols. Conducting this check before the initial commitment under a new configuration captures the heightened need for verification following changes that could affect the flight’s safety.