The Severn Estuary is well known for its twice daily 30-foot tidal range  and its strong current. Even when the tide is out the sand is very soft to stand on. 

Unfortunately this means the propeller is probably inaccessible by foot from the coast. 

Even by boat, the current, soft sand, twice-daily tides, and shortening autumn daylight hours mean exploration attempts will be tricky and brief.

However, due to the interest shown by the local TV and press, and the response, reminiscences and theories of the viewers, Bristol Helicopters feel encouraged to dig a little deeper.