Instrument Rating Checkride Practice Test

How often must VOR inspections be conducted for IFR flights?

1. Every 30 days

2. Every 12 months

3. Every 60 days

4. Every 24 months

The correct answer is: Every 30 days

The requirement for VOR inspections for IFR flights is to conduct them every 30 days. This is important because VOR systems, used for navigation in certain airspace, can drift and lose accuracy over time. Ensuring that the VOR is checked regularly helps maintain navigational integrity and safety when flying under instrument flight rules. While there are other inspection intervals for different types of navigation equipment or for specific operations, the 30-day requirement is specifically for VOR checks utilized in IFR operations. There are provisions allowing the use of the VOR system with accuracy verification within this timeframe to ensure pilots receive reliable navigation information. In contrast, annual or longer intervals, such as 12 months or even 24 months, do not align with the established guidelines necessary for VOR navigation reliability, making them insufficient for ensuring navigational accuracy in IFR conditions. A check every 60 days is also longer than what is specified for VOR systems under IFR regulations.