Core Viewpoint - The article discusses the frequent disputes arising from airlines' last-minute aircraft model changes, highlighting the lack of clear compensation standards for consumers affected by these changes [1][5]. Group 1: Consumer Complaints - A significant number of complaints regarding aircraft model changes have been reported, particularly on platforms like Black Cat Complaints, with 531 complaints mentioning "model change" [3]. - Consumers express dissatisfaction when wide-body aircraft are replaced with narrow-body models, as they perceive a decline in travel experience, comfort, and amenities [3][4]. - Specific cases illustrate consumer frustration, such as a passenger who purchased a ticket specifically to fly on a C919 aircraft but was later informed of a model change to an A321, leading to demands for free refunds [4][5]. Group 2: Airline Policies - Airlines often state that the aircraft model is not part of the transportation contract, allowing them to change models without offering compensation [6][7]. - Many airlines include disclaimers in their transportation conditions, indicating that the listed aircraft model is for reference only and not guaranteed [6]. - The industry standard suggests that airlines are not obligated to compensate passengers unless there is a change in cabin class due to model changes [9][10]. Group 3: Recommendations for Airlines - Experts recommend that airlines establish clear compensation standards for model changes, particularly for cases where a wide-body aircraft is replaced with a narrow-body one [10]. - Suggestions include allowing free transfers to nearby flights or waiving change fees for affected passengers [10]. - Airlines are encouraged to inform consumers during the ticket purchasing process about the potential risks of model changes [10].