What is the cruise speed range of the AV-8B Harrier II?

The cruise speed range of the AV-8B Harrier II is classified as subsonic to transonic. This means that the aircraft operates primarily below the speed of sound (subsonic), which is approximately Mach 1, but is capable of approaching that speed (transonic) under certain conditions.

The AV-8B was designed with vertical take-off and landing capabilities, which influences its speed performance. While it does not reach supersonic speeds during regular operations, its ability to approach the transonic range makes it versatile for various mission profiles, including ground attack and close air support. Therefore, the identification of its speed range as subsonic to transonic accurately reflects the operational capabilities of the Harrier II within the parameters of its design and intended use.

Other classifications, such as 'supersonic' or 'transonic to hypersonic,' do not accurately describe the AV-8B's operational profile, as the aircraft does not reach those higher speeds regularly. Furthermore, categorizing it as 'subsonic only' would neglect its capability to operate at transonic speeds when required, thus limiting the understanding of its full operational envelope.