Instrument Rating Checkride Practice Test

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What does NA indicate when filed as an alternate airport?

Alternate minimums are authorized
Alternate minimums not authorized due to various factors
Normal conditions apply for filing
Alternate can only be used for emergencies

The correct answer is: Alternate minimums not authorized due to various factors

When an airport is indicated as "NA" in the context of filing it as an alternate, it signifies that alternate minimums are not authorized for that airport. This condition can arise due to various factors such as inadequate approaches, lack of specific weather reporting, or the airport not being capable of meeting the necessary criteria to serve safely as an alternate for a given flight. In practical terms, this means that pilots cannot use this airport as a planned alternate when calculating their route and fuel requirements. The "NA" designation is important for flight planning as it helps ensure that pilots are aware of the limitations of certain airports, allowing them to select more suitable alternatives that meet regulatory requirements. It emphasizes the need to adhere to safety standards established by the FAA for instrument flight operations.