Which airspace is IFR-only and extends from 18,000 ft MSL to FL600?

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Study for the Airspace and Weather Minimums Test. Prepare with flashcards and multiple choice questions, each offering hints and explanations. Ace your exam with confidence!

Multiple Choice

Which airspace is IFR-only and extends from 18,000 ft MSL to FL600?

Explanation:
In this airspace, the only IFR-only region starts at 18,000 feet MSL and goes up to FL600. This is Class A. Within Class A, every operation must be conducted under instrument flight rules, and you must have an ATC clearance to enter or fly there; VFR is not permitted because the space is reserved for IFR traffic separation and control. Other surrounding classes around airports allow both IFR and VFR, with varying entry requirements and different vertical extents (for example, Class B from the surface up to a top, Class C and D with their own floors and ceilings). But they’re not IFR-only like Class A.

In this airspace, the only IFR-only region starts at 18,000 feet MSL and goes up to FL600. This is Class A. Within Class A, every operation must be conducted under instrument flight rules, and you must have an ATC clearance to enter or fly there; VFR is not permitted because the space is reserved for IFR traffic separation and control.

Other surrounding classes around airports allow both IFR and VFR, with varying entry requirements and different vertical extents (for example, Class B from the surface up to a top, Class C and D with their own floors and ceilings). But they’re not IFR-only like Class A.

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