OK, so first be careful with a database like Access for applications like this. Access doesn’t exactly scale very well as the use of the application grows.
1. Your question doesn’t make a lot of sense. It looks like part of the question got eaten. Please repost that question into the comments.
2. Now, that said if I remember correct access has what it calls queries, which allow you to have multiple statements being executed in sequence. Basically the user would enter the number of hours for the flight. When they click the “Save” button you run the “query” which then updates the airplane table, the flightplan table (or whatever) and the parts table to change the number of hours for everything at once.