In the context of holding patterns at or below 14,000 feet, how should inbound legs be timed?

Inbound legs of holding patterns at or below 14,000 feet are standardized to be timed at 1 minute. This timing is established to ensure a consistent and predictable method of execution during the holding maneuver, which is essential for maintaining safe separation from other aircraft.

When timing the inbound leg at 1 minute, pilots can ensure that their patterns remain efficient while preventing excessive delays. The standardized timing allows for better management of airspace and helps in coordinating with air traffic control, which is particularly important in busy airspace.

In practical application, holding patterns are designed based on performance criteria, and maintaining a 1-minute inbound leg can accommodate the typical ground speed of aircraft under standard conditions. This helps in achieving a uniform approach to holding procedures, thereby enhancing operational efficiency and safety.

In contrast, the other options reflect timings that are not standard for holding patterns at this altitude, which could lead to confusion or difficulties in maintaining proper spacing between aircraft.