IAF stands for which aviation term?

• A. Initial Approach Fix
• B. Initial Approach Facility
• C. Instrument Approach Facility
• D. International Airspace Facility

Answer: (A)

The concept being tested is the starting point of an instrument approach. IAF stands for Initial Approach Fix, which is the defined point where the initial approach segment begins for an instrument approach procedure. From this fix, you navigate along the published path (often via feeder routes) to join the intermediate and final approach segments and continue to the airport. This fix sets the initial course and any altitude or lateral constraints you must meet as you begin the approach.

The other terms aren’t used in standard aviation terminology for this purpose. An Initial Approach Facility would imply a physical facility, which isn’t what IFR procedures designate as the starting point. Instrument Approach Facility and International Airspace Facility aren’t the accepted designations for this concept either.