We have covered everything I think is most important about testing. Now I am going to use a case study to try to bring everything covered into perspective. For this example we will use the testing of a system residing on a large jet airplane that must be certified by the FAA. This example should exercise most aspect of agility and Essential Testing. One reason for using a FAA certification example is because testing in regulated environments is becoming more of a reality every day and the FAA is one of the most demanding environments for proving safety.