Siemetzki Asro 3
Alfons Siemetzki of Kirchdorf am Iller, privately-built the ASRO 3T ultra-light single-seater. This experimental helicopter was an open-frame steel-tube machine of conventional layout, with a rudimentary windshield to protect the pilot, a skid undercarriage and a 65 shp BMW 6002 turboshaft engine mounted amidships. A conventional rotor system, with two-blade main and tail rotors.
The single-seat ASRO 3-T was built by Alfons Siemetzki and made its first flight on 29 December 1961, piloted by USAF Captain Stanley Frick.
The ASRO-3 was used to develop the ASRO-4