The first prototype, powered by a Derwent V engine, and registered PH-NDY, made its maiden flight on 19 May 1951, and despite being damaged when its undercarriage failed to extend on its second flight later the same day, was displayed at the Paris Air Show later that year.
Prototipe pertama, didukung oleh mesin V Derwent, dan terdaftar PH-NDY, melakukan penerbangan perdananya pada tanggal 19 Mei 1951, dan rusak saat undercarriage gagal pada penerbangan kedua pada hari yang sama, ditampilkan di Paris Air Show akhir tahun itu.