When determining EFR at IAF for the practice drop in approach, what should you do with the total EFR number?

When determining EFR at IAF for the practice drop in approach, what should you do with the total EFR number?

• A. Subtract 50
• B. Subtract 10
• C. Add 50
• D. No change

Answer: (A)

When you determine the EFR at the Initial Approach Fix for a practice drop-in approach, you subtract a fixed 50 from the total EFR. That 50 is an offset built into the full-route value, and removing it gives you the EFR that specifically applies from the IAF on the drop-in segment. Subtracting 50 ensures the numbers reflect the approach portion starting at the IAF rather than the entire route. Subtracting anything smaller or larger, or leaving it unchanged, would misrepresent the performance estimate for the IAF portion.