What is the standard no-wind length of inbound legs of the holding pattern when holding at or above 14,000 feet?

The standard no-wind length of inbound legs of a holding pattern, when holding at or above 14,000 feet, is set at 1.5 minutes. This duration is designed to ensure that aircraft maintain an appropriate distance and timing within the holding pattern, considering the increased ground speed due to altitude.

At higher altitudes, aircraft can travel faster, meaning that an inbound leg of 1.5 minutes allows sufficient time to maintain the integrity of the holding pattern, enable proper spacing from other aircraft, and provide pilots with enough time to manage their approach to the final approach fix. The 1.5-minute leg length is specifically stipulated in aviation regulations and procedures to provide a standard method for pilots operating at those altitudes.

In contrast, other durations such as 1 minute or 2 minutes may not adequately account for the airspeed and operational requirements for holding patterns above 14,000 feet, which is why they would not be considered standard for this specific altitude.