Fastest flight level search has the ability to take the most advanced winds aloft data available today and automatically computes your fastest as well as most fuel efficient flight level in real time based on the performance figures of your actual aircraft.  This can save significant time, fuel and money.  This winds aloft data uses the Rapid Update Cycle data, not to be confused with the twice a day winds aloft information you get for your preflight weather briefing. The Rapid Update Cycle is updated every hour, and incorporates information such as the direction and velocity of winds collected from NexRad stations.  Used in combination with the Cheapest fuel price search savings can be significant.