 The Sherpa flew successfully within a limited flight envelope, achieving a "flat-out" at ), making it one of the slowest jets ever built.Despite reaching its design goals, the concept was considered "not fully realised in practice" and eventually the project was wound up.The Sherpa was subsequently donated to the College of Aeronautics at Cranfield, where it was flown until 1958, when an engine problem caused it to be grounded until replacement engines could be found.