Seminar paper from the year 1998 in the subject Business economics - Supply, Production, Logistics, grade: 1.3, The University of Sydney, language: English, abstract: This paper reviews the conceptual basis of the heuristic model for frequency and route planning for small size airlines developed by Ghobrial et al (1992). Particularly it is referred to scheduling issues for airline hub operations as outlined by Dennis (1994). Consequently a number of critical issues are raised that could improve the heuristic model above. A number of additional variables could influence scheduling decisions and should be incorporated into the model. For instance, small size airlines can be affected by the scheduling necessities of hub-and-spokes operations of larger carriers, when they are providing services into major hubs. Furthermore, the optimal network for a small size carrier can be hub-and-spokes type network constructed around a regional hub. This case is not specifically included into the model.