Geologic Time Chart. The Earth's axis is tilted from perpendicular to the plane of the ecliptic by 23.45Â°. This tilting is what gives us the four seasons of the year-spring, summer, autumn (fall) and winter.Since the axis is tilted, different parts of the globe are oriented towards the Sun at different times of the year.eologic Time Chart. The Earth's axis is tilted from perpendicular to the plane of the ecliptic by 23.45Â°. This tilting is what gives us the four seasons of the year-spring, summer, autumn (fall) and winter.
Air Operations Area (AOA) means a portion of an airport, specified in the airport security program, in which security measures specified in Title 49 of the Code of Federal Regulations are carried out.ir Operations Area (AOA) means a portion of an airport, specified in the airport security program, in which security measures specified in Title 49 of the Code of Federal Regulations are carried out.
Integrated Airman Certification and Rating Application (IACRA) IACRA is the web-based certification/rating application that guides the user through the FAA's airman application process. IACRA helps ensure applicants meet regulatory and policy requirements through the use of extensive data validation.