Question

Given a magnetic course of 090 degrees, which of the following would be an appropriate altitude for cruise flight during an operation under IFR in uncontrolled airspace under 18,000 feet MSL?

Answer 1

For a magnetic course of 090 degrees under IFR in uncontrolled airspace, appropriate cruising altitudes could include 3,500, 5,500, 7,500 feet, etc., up to 17,500 feet MSL.

Step-by-step explanation:

The question pertains to the appropriate altitude for cruise flight under IFR (Instrument Flight Rules) in uncontrolled airspace for an aircraft with a magnetic course of 090 degrees.

According to the FAA's (Federal Aviation Administration) regulations, under IFR in uncontrolled airspace below 18,000 feet MSL (Mean Sea Level), the altitude for eastbound flights (courses from 360 to 179 degrees) should be at odd thousand-foot altitudes plus 500 feet (such as 3,500; 5,500; 7,500 feet, etc.). Therefore, for a magnetic course of 090 degrees, appropriate altitudes could be 3,500, 5,500, 7,500, etc., up to and including 17,500 feet MSL.