FAA Aircraft Dispatcher Practice Exam

What is the minimum fuel supply requirement for IFR domestic operations?

1. Fuel to get to the destination plus 30 minutes reserve

2. Fuel to get to the destination and then to an alternate, plus 30 minutes

3. Fuel to get to the destination, the furthest alternate, plus 45 minutes

4. Fuel needed to reach the origin airport with additional 60 minutes supply

The correct answer is: Fuel to get to the destination, the furthest alternate, plus 45 minutes

For IFR (Instrument Flight Rules) domestic operations, the minimum fuel supply requirement is designed to ensure that an aircraft has adequate fuel to safely complete its flight, including contingencies. The correct answer specifies that the aircraft must carry enough fuel to reach the destination airport, proceed to the furthest alternate airport if necessary, and additionally have a reserve of fuel for a minimum of 45 minutes of flight. This requirement is crucial because it provides a buffer in case of unexpected delays, diversions, or holding patterns that may extend flight time. By ensuring that the aircraft has enough fuel not only for the expected route but also for alternate and reserve needs, it promotes safety and prepares for a variety of situations that could arise during the flight. The requirement to include fuel to the furthest alternate recognizes that, in IFR operations, alternate plans might include airports that are further away due to various factors like weather or air traffic. Additionally, the stipulation of having 45 minutes of reserve fuel is a standard practice reflecting best safety measures in aviation, accounting for possible unforeseen circumstances while en route. In contrast, other options lack specific provisions for alternate airport fuel needs or the correct reserve times required for safe operations, which does not fully meet the IFR standards set by aviation regulations.