What does FOB stand for in aviation terms?

In aviation, FOB stands for Fuel On Board. This term refers to the total amount of fuel carried by an aircraft at any given time. Understanding FOB is crucial for flight planning, as it directly impacts the aircraft's range, weight, and overall performance. Accurate calculation of fuel on board ensures that the aircraft has sufficient fuel for the intended flight mission, considering factors such as distance, weather conditions, and contingency planning for potential delays or diversions. This measurement is essential for compliance with safety regulations and operational efficiency, making it a fundamental concept in aviation operations.