Final answer:
The pilot should adjust the plane's heading to counteract the crosswind and headwind, aiming to align the plane's ground velocity parallel to the runway for a proper landing. The direction they must point the plane depends on the wind's velocity and direction.
Step-by-step explanation:
If wind is shown by the landing direction indicator, the pilot should land on the runway in such a way that the airplane's velocity is parallel to the runway. To achieve this, the pilot must compensate for the wind velocity by pointing the plane in a direction that combines its velocity relative to the air with the velocity of the air (wind) relative to the ground. The pilot must adjust the angle of approach to ensure that the crosswind does not push the airplane off course.
As per our example, the wind is blowing from the northeast at 90 km/h while the plane can fly at 300 km/h. The pilot must head her plane northeast to compensate for this wind while maintaining a ground track that leads directly north. This enables the airplane to have a velocity parallel to the runway upon landing. The pilot might also perform last minute maneuvers to align the wheels with the runway direction just before landing.