Pest Control Aircraft Pilot Practice Test

What may limit the effectiveness of the Wide Area Augmentation System (WAAS) in certain areas?

1. Obstructions such as trees or mountains

2. Low atmospheric pressure

3. High altitude of the aircraft

4. Distance from the nearest airport

The correct answer is: Obstructions such as trees or mountains

The effectiveness of the Wide Area Augmentation System (WAAS) can be significantly impacted by obstructions such as trees or mountains. WAAS operates by providing accurate positioning information through a network of ground reference stations that communicate with satellites. When there are physical obstructions in the environment, they can obstruct the satellite signals, leading to reduced signal quality or complete loss of signal. This can directly affect the pilot's ability to navigate accurately and may lead to challenges in ensuring precise pest control operations from the aircraft. Therefore, understanding the geographical features of the operating area is crucial for pilots using WAAS for navigation.