MT-Propeller Entwicklung GmbH has received the EASA TCDS P.101 for the MTV-21, a 2-blade variable pitch constant speed propeller with hydraulic pitch change mechanism.

With a weight of approx. 10 kg (22 lbs) to 13,5 kg (29,8 lbs) depending on the propeller configuration, the MTV-21 has the lowest weight of all 2-blade constant speed propeller models worldwide.

It is also available with feathering and reverse. The diameter range from 145 cm (57 in) to 203 cm (80 in) for a max power of up to 104 kw (141 hp) and a max speed of up to 3000 rpm.

It can be used on engines with the flange types A (for motorglider engine bolts 7/16in-20UNF), D (ARP-502, Type 1) and F (SAE No.1, bolts 3/8in -24UNF) and can be equipped with a MT-Spinner and a deeice protection.

It is an excelent option for beeing installed e.g. at the Rotax 915 engine and therefore the lightest certified 203 cm diameter propeller for STOL Aircraft powered by the Rotax 915iS .