Aero Linx: The International Federation of Airworthiness (IFA) IFA uniquely combines together all those with responsibility for policies, principles and practices concerned with the continuing airworthiness of civil transport aircraft throughout the world. The International Federation of Airworthiness (IFA) is...
Outer Fix An adapted fix along the converted route of flight, prior to the meter fix, for which crossing times are calculated and displayed in the metering position list.