MT-Propeller NEWS

Earthrounder Stefan Mommertz and his way around the world.


Earthrounder Stefan Mommertz with his airplane
September 03, 2019




In August 2018 Stefan Mommertz startet his way around the world with his Cessna 185 equipped with a 3-blade MT-Propeller MTV-9 on the airport Würselen-Merzbrück. Heading West the first leg of his flight led him over Iceland, Greenland, Canada, Alaska, Siberia, Japan and the Philippines, where he had to leave his Cessna for a while and went back to work.

Four months later he started in Borneo for the second leg of his flight around the world. The route followed the South China Sea to Singapur and West Malaysia over the Gulf of Thailand to Bangkok and Chiang Mai to Bangladesh, India, Pakistan, Oman and Abu Dhabi.

The last leg of his way around the world in spring 2019 led him over Jordan, Aqaba, Alexandria, Kreta, Italy to Lucerne in Switzerland, where he picked up his mother for joining him on the flight back to Germany.

He flew 33,000 Kilometers in three stages and visited 4 continents and 28 countries. His total flying time was about 32 days.

Congratulation to Stefan Mommertz for his great success.

Letter of Acceptance for 4-bladed MT-Propeller on Britten Norman BN2() in Curacao


Britten Norman BN2() with MTV-14 Propeller installed
August 17, 2019




MT-Propeller has received the Letter of Acceptance of the EASA STC No. 10063741 from the CURACAO CIVIL AVIATION AUTHORITY for the installation of the 4-blade MTV-14-B-C-F/CF190-17 propellers on the Britten Norman BN2() series. This installation provides significant weight and noise reduction compared to the original 3-blade propellers.

The EASA STC is also already accepted by DGAC Mexico. The FAA STC is in progress.

Visit us at the Airventure Oshkosh


MT-Propeller booth at the AirVenture Oshkosh
July 01, 2019



Visit our booth at the Airventure Oshkosh July 22 - July 28 2019.

EASA STC for Beech 1900 Series


Beech 1900D with 5-blade MTV-27
June 05, 2019



MT-Propeller received the EASA STC for the 5-blade Quiet Fan Jet MTV-27-1-()-C-F-R(P)/CFR260-65k on the Beech 1900 Series (Beech A100/200/300/1900 Model no. 1900, 1900C, 1900D) powered by two Pratt & Whitney PT6A-65B or -67D Propeller Turbines.

The MTV-27 has a smaller diameter and bonded on nickel alloy leading edges. There are no ADs for the MTV-27 and no rpm restriction for the complete operational range, and many more advantages.

The FAA STC is in progress.

New STC for Kodiak 100 Series


Kodiak with 5-blade MTV-27
May 08, 2019



MT-Propeller received the EASA STC for the Quiet Fan Jet MTV-27-1-E-C-F-R(P)/CFR240-55( ) on the Kodiak 100 Series with the Pratt & Whitney PT6A-34 Engine.

The STC provides improved Take-Off by 20%, lower ITT during start-up, significant reduced noise and more advantages.
The FAA STC is in progress.

Worlds first 9 bladed prop started the flight test program


Testairplane Cheyenne with 9-blade MTV-39
March 13, 2019



Worlds first 9 bladed prop started the flight test program on March 11th 2019 and initial results are very promising.

Function, Handling and Operation on the aircraft is like those props have been in service already for years.

This new development for low noise, high performance future airplanes driven by electric powered engines, turbine engines or geared piston engines for propellers with low RPM.

Depending on propeller driven airplane designs, top speeds of up to 430 KTAS are realizable with such a installation, by reducing at the same time the fuel consumption to a turbo prop from a jet.

MT-Propeller proves with this milestone that the innovation in propeller driven airplanes is just at the beginning.

Flying a Jet comfort airplane powered with props combined with the lowest fuel consumption becomes a near future.

Whatch the testflight Video
220 KTS with 1700RPM and max Torque fly by MTV-39

Visit us at the upcoming airshows


Our Booth at the Aero Friedrichshafen
February 28, 2019



Sun 'n Fun Int'l Fly-In Expo April 2-7, 2019 in Lakeland, Florida, USA

Aero Friedrichshafen April 10-13, 2019 - Booth A3-309 in Friedrichshafen, Germany

FAA TCDS for the very lightweight MTV-21
propeller series


February 21, 2019

MT-Propeller Entwicklung GmbH has also received the FAA TCDS P16BO for the MTV-21, a 2-blade variable pitch constant speed propeller with hydraulic pitch change mechanism.

With a wheigt 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 equiped 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 .

EASA TCDS for the very lightweight MTV-21
propeller series


February 1, 2019

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 wheigt 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 equiped 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 .

EASA STC for Cessna 208 Series with
TKS-Deicing System


Cessna 208 Blackhawk Series with MTV-27
Cessna 208 Blackhawk Series with MTV-16
February 1, 2019




MT-Propeller Entwicklung GmbH has received the EASA STC No. 10058942 Rev2 for the aircraft Cessna 208, 208B with the engines Pratt & Whitney PT6A-42A engine and optional increased Gross Weight Pratt & Whitney PT6A-140 engine and optional increased Gross Weight and TKS-Deicing System, with either 4-blade MTV-16 or 5-blade MTV-27 Propeller.


The advatages of the installation are a shorter take-off distance, enhanced cruise performance, significant noise reduction, less weight, unlimited blade life …

Anac Brazil STC for Twin Commander Series


Twin Commander Series with MTV-27
January 10, 2019



MT-Propeller Entwicklung GmbH has received the ANAC Brazil STC No. 2018S12-10 for the Quiet Fan Jet 5-blade scimitar composite propeller MTV-27 on the Twin Commander 690 / 695 Series .
The installation is already certified by EASA and FAA.

The advatages of the installation are a reduced take-off distance, enhanced cruise performance, cooler ITTs during engine start up.
The MT-Propellers have less weight than the origianl propellers and reduce the cabin noise significant.
see more details

FAA STC QFJ 5-blade MTV-27 on
Cessna 208 Blackhawk


Cessna C208 Blackhawk with 5-blade MT-Propeller
November, 2018




MT-Propeller Entwicklung GmbH has received the FAA STC SA3959NY for the next generation 5-blade Quiet Fan Jet scimitar composite propeller MTV-27-1-E-C-F-R(P)/CFR245-55a on the Cessna 208, 208B Blackhawk with the engines Pratt & Whitney PT6A-42A and new with Pratt & Whitney PT6A-140.

This installation is also supplemental type certified by EASA STC 10058942 Rev.1 and ANAC Brazil STC 10058942 Rev1.