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Title:           Opportunistic commercial formation flights in continental airspace for greener aviation
Subject:         Transportation Research Interdisciplinary Perspectives, 36 (2026) 101818. doi:10.1016/j.trip.2025.101818
Keywords:        Formation flights,Air Streams,Traffic complexity,Air traffic management,Fuel savings
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     Item: 
      Title: Opportunistic commercial formation flights in continental airspace for greener aviation
      Children: 
       Item: 
        Title: Introduction
        Children: 
         Item: 
          Title: Atlantic Formation Flights
         Item: 
          Title: Air Streams
         Item: 
          Title: Sector Optimization
       Item: 
        Title: Related Work
       Item: 
        Title: Methodology
        Children: 
         Item: 
          Title: Data and Traffic Flows
         Item: 
          Title: Air Stream Design
         Item: 
          Title: Air Stream Utilization and Formation Flight
         Item: 
          Title: Benefit Evaluation
       Item: 
        Title: Fuel Weight Impact
       Item: 
        Title: Results
        Children: 
         Item: 
          Title: Use Case
         Item: 
          Title: Air Stream
          Children: 
           Item: 
            Title: Initial and End Points
           Item: 
            Title: Intermediate Entry and Exit Points
           Item: 
            Title: Resulting Air Stream
         Item: 
          Title: Occupancy Estimation
          Children: 
           Item: 
            Title: Standard Traffic
           Item: 
            Title: Formation Flights
           Item: 
            Title: Formation Flight and AS result Example
         Item: 
          Title: Benefit Deviation Rate
         Item: 
          Title: Reduced Contingency Fuel Impact
       Item: 
        Title: Discussion
        Children: 
         Item: 
          Title: Limitations
         Item: 
          Title: Future Work
       Item: 
        Title: Conclusions
       Item: 
        Title: CRediT authorship contribution statement
       Item: 
        Title: Declaration of competing interest
       Item: 
        Title: Acknowledgments
       Item: 
        Title: Data availability
       Item: 
        Title: References
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