What is the purpose of the fuel calculation every 15 minutes while in holding?

The purpose of conducting a fuel calculation every 15 minutes while in holding is to ensure that there is sufficient fuel for the flight. This ongoing assessment helps the flight crew manage fuel levels effectively and provides a real-time understanding of fuel consumption during the holding pattern. By evaluating fuel needs at regular intervals, flight crews can make informed decisions related to the continuation of the flight or the need to divert if fuel levels become critically low.

While maintaining accurate records for regulatory compliance and planning for a diversion are important aspects of flight operations, these are not the primary reasons for the frequent fuel calculations during holding. The emphasis is on actively monitoring fuel levels to ensure safety and operational efficiency. Regularly updating fuel calculations helps in preventing scenarios where fuel might run low, allowing the crew to address potential issues proactively. Monitoring changes in fuel consumption is also relevant; however, the key goal remains ensuring that sufficient fuel is available for the planned flight objectives.