Final answer:
The U.S. airline industry, while not perfect, has improved operational efficiency and safety over time. There is no specific mention of an airline with a perfect safety record in the provided reference material. Historical aviation incidents like the 'Gimli Glider' show the commitment to safety, alongside the acknowledgment of industry challenges like mergers.
Step-by-step explanation:
The inquiry seems to revolve around the history of aviation and the performance of airlines, which is appropriately categorized under Social Studies. Although the information does not directly answer the question about an airline that has never had an incident, the provided context does highlight the complexities of the airline industry as well as its safety evolution.
While the provided reference material notably addresses the operational improvements and safety advancements over time, it does not single out a particular airline as having a perfect safety record without a crash or a forced landing. However, it emphasizes the significant strides taken by the industry as a whole to ensure the safety and efficiency of air travel. Incidents like the Air Canada 'Gimli Glider' emergency landing in 1983 serve as examples of aviation challenges and how they were safely managed without loss of life, reflecting the ongoing efforts to maintain air travel safety. It also suggests that despite complications such as mergers' potential impact on competition, safety remains a top priority overseen by government inspectors.