When should you start timing for the inbound leg of a holding pattern?

The correct approach for timing the inbound leg of a holding pattern is to start timing when turning inbound. This timing is crucial because it helps maintain the standard holding pattern dimensions and ensures that the aircraft is correctly positioned for approach and landing.

When you're on the outbound leg of the holding pattern, the timing begins from the moment you initiate the turn back toward the fix you are holding over. This method ensures that you are judging the time accurately for the inbound leg, which typically lasts for one minute, unless otherwise specified. By timing from the turn, you align your procedure with standard operating practices, allowing for consistency and predictability in the holding pattern.

Starting timing at other points, such as when entering the pattern, when established on the outbound leg, or immediately upon receiving clearance, would not provide an accurate measure of the time spent in the holding pattern, potentially resulting in improper spacing and delays in your approach sequence. Therefore, initiating timing as you turn inbound is essential for flight path management, particularly in busy airspace scenarios.