1. Why are commercial service airports required to adhere to Part 139, but not general aviation airports? explain i Token=IQoJb3JpZ2luX2VjEAUaCXVzLWVhc3QtMSJGMEQCIEYrcztx8uD0qSuenQ8ymThiWc7wI2%2BHLt%2FJ SHA256&X-Amz-Date=20201212T061850Z&X-Amz-SignedHeaders=host&X-Amz-Expires=300&X-Amz-Credent 2. Why is SMS (safety management […]