The paper provides analytical evidence of the added-value of flexibility for air transportation systems. More specifically, the impact of a new innovative modular aircraft on the operations of an airline is deeply analyzed. The impact analysis is carried out with an integrated schedule planning model which presents a combination of appropriate optimization and behavioral modeling methodologies....

The present state of communication networks with respect to speed and reliability and the recent growth of distributed applications have created a need for a global enterprise solution to the legality checking and attribute evaluation requirement. Traditionally, the mainframe systems provided the cohesion of all the processes with respect to the company regulations. When decentralized systems a...

Transportation and logistics are fertile areas for modeling. Simulation has traditionally been used in warehousing and inside the distribution center or processing hub in the trucking and package delivery sectors, for baggage systems and passenger queueing in the airline industry, and for detailed models of terminals and yards in the railroad industry. In addition, simulators are used for certa...

F reasons of tractability, the airline scheduling problem has traditionally been sequentially decomposed into various stages (e.g., schedule generation, fleet assignment, aircraft routing, and crew pairing), with the decisions from one stage imposed upon the decision making process in subsequent stages. Although this approach greatly simplifies the solution process, it unfortunately fails to ca...

The process of scheduling and planning refers to examining aircraft history based on when where the should go for service checks. In this paper, authors focused line maintenance activities examined impact unexpected factors (Missing tools safety requirements) such during through a Discrete Event Simulation (DES) model. DES was used determine following: 1. plan time each task according X airline...

This paper is the second of two papers entitled “Airline Planning Benchmark Problems”, aimed at developing benchmark data that can be used to stimulate innovation in airline planning, in particular, in flight schedule design and fleet assignment. The former has, to date, been under-represented in the optimization literature, due in part to the difficulty of obtaining data that adequately reflec...

The Federal Aviation Administration hopes to convert air traffic management to Trajectory Based Operations (TBO), under which aircraft flight plans are known to computer systems which aid in scheduling and separation. However, few aircraft flying today have equipment designed to support TBO. We conducted a human-in-the-loop simulation of TBO using current fleet equipage. Three aircraft equipage...

The Crew Rostering Problem considers the assignment of the crew staff to a set of pairings covering all the scheduled flights so that operations costs are minimized while its solution must meet hard constraints resulting from the safety regulations of Civil Aviation as well as from the airlines’ internal agreements. Another goal is of the highest interest for airlines: since the overall satisfa...

We consider a very simple algorithm to solve large scale 0-1 integer linear programs and a simple heuristic to encourage convergence to an integer solution which have been very successful in commercial applications. We find it useful to revisit its main ideas and establish its relation to several known algorithms, including the generalized iterative scaling algorithm. We discuss ways to relate ...