If the holding pattern is charted, what is not required in the clearance?

In aviation, when a holding pattern is charted, it typically depicts the standard entry and exit procedures, as well as the expected geometry of the hold itself. As a result, pilots and controllers already have a visual reference for the holding pattern's structure and do not need detailed verbal instructions on how to fly it, since this information is readily available on the chart.

In contrast, the other components mentioned are often necessary. For example, the Expected Further Clearance (EFC) time provides pilots with an idea of when they can expect clearance to proceed beyond the hold, which is vital for managing their flight plans and fuel. Knowledge of the surrounding airspace ensures that the pilot can operate safely without conflicts with other flights, while understanding the reason for the holding pattern is important for situational awareness and operational decision-making. Therefore, the absence of detailed instructions in the clearance is acceptable when a holding pattern is charted.