If an aircraft is facing north, on what heading must it roll out to turn to west?

To turn an aircraft from a north heading (which is 0 degrees) to a west heading (which is 270 degrees), the aircraft must roll out to that specific heading.

When the aircraft is facing north, a turn to the west requires the aircraft to execute a left turn. In aviation, headings are defined in degrees, with north at 0 degrees, east at 90 degrees, south at 180 degrees, and west at 270 degrees.

The correct heading after the turn, which is 270 degrees, is crucial as it indicates the aircraft's orientation relative to the compass. Therefore, rolling out on a heading of 270 degrees accurately signifies that the aircraft is now facing west, completing the intended maneuver effectively.

The other options do not represent the correct heading for a westward direction, highlighting the necessity of understanding cardinal headings in navigation.