Timing at the FAF begins when?

Timing at the FAF begins when?

• A. Crossing FAF
• B. Beginning of the procedure
• C. At the MAP
• D. When crossing the runway threshold

Answer: (A)

Timing for the final approach is started when you cross the Final Approach Fix on the inbound course. The FAF marks the start of the final approach segment, which runs from the FAF to the Missed Approach Point. For timing-based portions of non-precision approaches, you measure elapsed time from that crossing to the MAP to ensure you reach the MAP with the proper progress. Beginning timing at the start of the procedure would mix in the initial/intermediate segments, and starting at the MAP would leave you without timing data for the final approach; crossing the runway threshold happens after the MAP, so that’s not where timing begins.

Timing for the final approach is started when you cross the Final Approach Fix on the inbound course. The FAF marks the start of the final approach segment, which runs from the FAF to the Missed Approach Point. For timing-based portions of non-precision approaches, you measure elapsed time from that crossing to the MAP to ensure you reach the MAP with the proper progress. Beginning timing at the start of the procedure would mix in the initial/intermediate segments, and starting at the MAP would leave you without timing data for the final approach; crossing the runway threshold happens after the MAP, so that’s not where timing begins.