The first of four full-scale development examples of the McDonnell douglas AV-8B Harrier II, now in flight test at St Louis

The illustration clearly show the new features of the AV-8B, including the raised cockpit and the new wing with two more strongpoints. Also shown are the lift-improvement devices (LIDs) that control circulation of the exhaust efflux around the aircraft when taking off and landing.

The first of the two YAV-8B prototypes, converted from AV- 8A airframes, showing a typical weapons load including bombs, gun pods and Sidewinder AAMs.

Photographed during its first take-off on 5 November 1981, this is the first of four full-scale development prototypes of the AV-8B. On this photograph, it lacks the leading-edge extensions that will be a standard feature.

Photographed on the occasion of its roll-out at St Louis, this is the first of four full-scale development prototypes of the AV-8B. On this photograph, it lacks the leading-edge extensions that will be a standard feature.

The first of the two YAV-8B prototypes flying with leading-edge extensions - slightly larger than the final form adopted for the AV-8B.

The second YAV-8B prototype in flight; this aircraft was later lost in a non-fatal accident.

McDonnell Douglas AV-8B Harrier II

This drawing shows the AV-8B with LERX (leading-edge extensions) and with the larger lift-improvement strokes fitted when gun pods are not carried.