Translation of flugunfähig in German-English

Let me explain: A company that has may difficulties needs to change its behavior, its organization, its business plan and sometimes the entire management. In this case, change must happen anyway.
The vehicle turned west towards the countryside and drove on Route MEX186 towards Escargera and then southwards. I fell asleep soon and had a very bad sleep, as it was colder than I had imagined.
The travel agent's representative promised that they would return us the difference of the money. They also assured us that we would get special treatment, such as extra drinks and a Kayak expedition.