Which of the following is NOT a type of modified traffic pattern?

The identification of "Direct landing approach" as not being a type of modified traffic pattern is based on the definitions and uses of different traffic pattern maneuvers in helicopter operations.

In aviation, a traffic pattern is a predetermined path that aircraft follow when approaching and departing from an airport. Modified traffic patterns include various adjustments to standard procedures that enhance operational safety or efficiency based on specific circumstances.

Extended legs refer to a longer downwind that allows for additional space for a helicopter to maneuver and prepare for landing, while 360-degree turns can be utilized to gain altitude or adjust positioning without leaving the pattern. Normal traffic legs follow the standard approach for takeoff and landing but do not inherently account for adjustments based on evolving conditions.

In contrast, the direct landing approach is characterized by a straight descent to the landing zone without following the traditional traffic pattern. While this may be a valid method in certain situations, it does not constitute a modification of the established traffic pattern, hence categorizing it outside of modified traffic patterns. Understanding this distinction aids in safe and effective helicopter operations during landings and takeoffs.