MT-Propeller

Press releases

EASA STC for Diamond DA 42 series with new 3-blade MT-Propeller MTV-6 for improved performance (Newest Scimitar Blades like on all new DA42 Manufactured Versions)

Atting, December 2019

MT-Propeller Entwicklung GmbH received the EASA STC 10071632 REV 1 for the installation of the new scimitar design 3-blade hydraulically actuated constant speed propeller MTV-6-( )-C-F/190-69( ) on the Diamond DA-42() aircraft series powered by two Technify Motors GmbH TAE 125-01, TAE 125-02-99, TAE 125-02-114 or Austro Engine GmbH 4E-B.

The FAA STC is in progress.


MT-Propeller Vice President Martin Albrecht says, that the installation features the following advantages:

• Best vibration damping characteristics for almost vibration free propeller operations.
• No engine modifications.
• Ground roll & takeoff distance over 50 ft obstacle is reduced by approx. 40 m (131 ft).
• Climb performance improvedby 10%.
• Very smooth cruising - 2 to 3 kts more speed (Technify).

The MT-Propeller natural composite blades have no life limitation and are repairable in case of a FOD.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 220 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. More than 25 000 propeller systems with more than 75 000 blades are in service.
150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.
printable version of the Diamond DA 42 picture, for pressreleases only CMYK, 300dpi, 3.1 MB

more information about the STC (.pdf 2.5MB)

ANAC Brazil STC for Piper PA46-350P, PA46R-350P with the 4-blade MT-Propeller MTV-14

Atting, October 2019

MT-Propeller Entwicklung GmbH has received the the ANAC Brazil STC 2019S10-04 for the next generation 4-blade scimitar composite propeller MTV-14-B/195-30b on the Piper Models PA-46-350P, PA-46R-350T powered by a Lycoming TIO-540-AE2 Engine.

This installation ist already supplemental type certified by EASA STC 10034435 and FAA SA03637NY.


MT-Propeller President Gerd Muehlbauer says, that the installation feature the following advantages:

• Shorter take-off distance by approx. -5 % (SL, ISA conditions)
• Enhanced climb and cruise performance by approx. 5 to 10% (SL, ISA conditions)
• Enhanced cruise performance by 5 to 8 kts (MTOW, ISA conditions)
• With "max. Engine Speed 2500 rpm" the airplane complies with "Erhöhter Schallschutz" for Germany

The MT-Propeller natural composite blades provide significant inside and outside noise reduction. They have no life limitation and are repairable in case of an FOD.
They also provide best vibration damping characteristics for almost vibration free propeller operation and have bonded on nickel alloy leading edges for superior erosion protection of the blades.
The scimitar 4-blade design gives the Piper PA-46-350P, PA-46R-350T an unbeatable esthetic ramp appeal.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.
The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. More than 25 000 propeller systems with more than 75 000 blades are in service.
150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.

printable version of the PA-46-350 picture, for pressreleases only CMYK, 300dpi, 3.6 MB

more information about the STC (.pdf 100kb)

TCCA Canada accepts the EASA STC for Beech 1900 series with 5-blade MT-Propeller MTV-27

Atting, October 2019

MT-Propeller Entwicklung GmbH has received the Letter of Acceptance of TCCA Canada for the EASA STC 10070090.

With this STC the Quiet Fan Jet composite propeller MTV-27-1-()-C-F-R(P)/CFR260-65k is supplemental type certified on the Beech Model no. 1900, 1900C, 1900D powered by two Pratt & Whitney PT6A-65B or -67D Propeller Turbines.

The FAA STC is in progress.



MT-Propeller President Gerd Muehlbauer announces, that the installation features the following advantages compared to the original 4-blade propellers:

• The 5-blade MT-Propeller has a smaller diameter of about 8 inch compared to the original 4-blade propeller, this means more ground clearance of about 4 inch for less FOD and also more clearance to the fuselage, therefore less cabin noise from the prop tips
• Take-Off of the Beech 1900 is improved by 4%, so compared to the original AFM a higher safety for the calculated take-off run
• The MTV-27 has no propeller ADs
• The 5-blade MT-Propeller reduces the propeller noise by up to 5 dB(A)
• The MTV-27 has bonded on wide chord nickel alloy leading edges for superior erosion protection of the blades
• TBO for the MT-Propeller is 4000 hours or 6 years, whatever comes first, for low maintenance costs
• No intermediate inspections are needed between the TBO which requires the propeller removal
• Reduced costs for spare parts, like blades and lower overhaul costs, for the complete propeller assembly
• No rpm restriction for the complete operational range

The long time proven MT-Propeller natural composite blades provide significant inside and outside noise reduction. They have no life limitation and are repairable in case of an FOD.
They also provide best vibration damping characteristics for almost vibration free propeller operation.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. 25 000 propeller systems with more than 75 000 blades are in service.
150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.

printable version of the Beech 1900 picture, for pressreleases only CMYK, 300dpi, 4 MB

more information about the STC (.pdf 150kb)

EASA STC for Cessna 441 with 5-blade MT-Propeller MTV-27

Atting, September 2019

MT-Propeller Entwicklung GmbH has received the EASA STC 10070901 for the Quiet Fan Jet composite 5- blade propeller MTV-27-1-E-C-F-R(G)/CFR224-55( ) on the Cessna 441 powered by two Honeywell TPE-331-() propeller turbines.

The FAA STC is in progress.



MT-Propeller Vice President Martin Albrecht says, that the installation feature the following advantages:

• Bonded on wide chord nickel alloy leading edges for superior erosion protection of the blades.
• Smaller diameter of up to 4 inch compared to the original propeller, this means more ground clearance of about 2 inch for less FOD and also more clearance to the fuselage, therefore less cabin noise from the prop tips.
• Take-Off improvement up to 4%, so compared to the original AFM a higher safety for the calculated take-off run.
• No propeller ADs.
• TBO 4000 hours or 6 years, whatever comes first, for low maintenance costs.
• No intermediate inspections are needed between the TBO which requires the propeller removal.
• Reduced cost for spare parts, like blades and lower overhaul costs, for the complete propeller assembly.
• No rpm restriction for the complete operational range.
• The long time proven MT-Propeller natural composite blades provide significant inside and outside noise reduction.
• No life limitation and repairable in case of an FOD
• All models comply with the strict German noise regulations 2010 - „Landeplatz Lärmschutz Verordnung“ for unrestricted airport operations in Germany and other European Countries!
• The MT-Propeller natural composite blades provide best vibration damping characteristics for almost vibration free propeller operation.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. More than 25 000 propeller systems with more than 75 000 blades are in service.

150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers provides best service and maintenance all over the world.

printable version of the Cessna 441 picture, for pressreleases only CMYK, 300dpi, 4 MB

more information about the STC (.pdf 150kb)

New EASA STC for Beech 1900 series with 5-blade MT-Propeller MTV-27

Atting, June 2019

MT-Propeller Entwicklung GmbH has received the EASA STC 10070090 for the Quiet Fan Jet composite propeller MTV-27-1-()-C-F-R(P)/CFR260-65k on the Beech Model no. 1900, 1900C, 1900D powered by two Pratt & Whitney PT6A-65B and -67D Propeller Turbines.

The FAA STC is in progress.


MT-Propeller Vice President Martin Albrecht says, that the installation feature the following advantages compared to the original 4-blade propellers:

• The 5-blade MT-Propeller has a smaller diameter of about 8 inch compared to the original 4-blade propeller, this means more ground clearance of about 4 inch for less FOD and also more clearance to the fuselage, therefore less cabin noise from the prop tips
• Take-Off of the Beech 1900 is improved by 4% , so compared to the original AFM a higher safety for the calculated take-off run
• The MTV-27 has no propeller ADs
• The 5-blade MT-Propeller reduces the propeller noise by up to 5 dB(A)
• The MTV-27 has bonded on wide chord nickel alloy leading edges for superior erosion protection of the blades
• TBO for the MT-Propeller is 4000 hours or 6 years, whatever comes first, for low maintenance costs
• No intermediate inspections are needed between the TBO which requires the propeller removal
• Reduced costs for spare parts, like blades and lower overhaul costs, for the complete propeller assembly
• No rpm restriction for the complete operational range
• The long time proven MT-Propeller natural composite blades provide significant inside and outside noise reduction. They have no life limitation and are repairable in case of an FOD. They also provide best vibration damping characteristics for almost vibration free propeller operation.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. 23 000 propeller systems with more than 74 000 blades are in service.
150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.

printable version of the Beech 1900 picture, for pressreleases only CMYK, 300dpi, 3.4 MB

EASA STC for Kodiak 100 series with 5-blade MT-Propeller MTV-27

Atting, May 2019

MT-Propeller Entwicklung GmbH has received the EASA STC 10069627 for the Quiet Fan Jet composite propeller MTV-27-1-E-C-F-R(P)/CFR240-55( ) on the Quest Aircraft Design LLC Kodiak 100 series.

The FAA STC is in progress.







MT-Propeller Vice President Martin Albrecht says, that the installation feature the following advantages:

• Take-Off improvement by 20%
• No propeller speed restrictions on ground while operating in low idle
• Lower ITTs during start-up for less engine wear
• Significant cabin noise [up to 5 dB(A)]and vibration reduction
• Unbeatable esthetic ramp appeal
• Comply with the strict German noise regulations 2010 - „Landeplatz Lärmschutz Verordnung“ for unrestricted airport operations in Germany and other European Countries!
• Max. RPM reduction to 2000 RPM with increased torque for 750 shp!

Due to the smaller diameter the MT-Propeller for the Kodiak 100 series has more ground clearance for less blade tip erosion and FODs. The MT-Propeller natural composite blades provide significant inside and outside noise reduction. They have no life limitation and are repairable in case of an FOD.

They also provide best vibration damping characteristics for almost vibration free propeller operation and have bonded on nickel alloy leading edges for superior erosion protection of the blades.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. 22 000 propeller systems with more than 74 000 blades are in service.
150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.

printable version of the Kodiak 100 picture, for pressreleases only CMYK, 300dpi, 4 MB

more information about the STC (.pdf 2MB)

Worlds first 9 bladed prop started the flight test program

Atting, March 19

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

Function, handling and operation of the aircraft is like those props have been in service already for years.

This new development is made 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 by props combined with the lowest fuel consumption becomes a near future.

A fly-by Video with 220 KIAS and 1700RPM with max Torque driven by the Cheyenne test aircraft powered by PT6A-135A turbines can be downloaded here


MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. 22 000 propeller systems with more than 74 000 blades are in service.
150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.

printable version of the 9-blade MTV-39 picture, for pressreleases only CMYK, 300dpi, 9 MB

EASA and FAA TCDS for the very lightweight MTV-21 propeller series

Atting, February 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 for STOL Aircraft powered by the Rotax 915iS .


MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certification requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. 20 000 propeller systems with more than 70 000 blades are in service.

150 Million fleet hours where already performed on MT-Propellers. 36 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.

Twin Commander 690 / 695 Series with 5-blade MT-Propeller MTV-27 supplemental type certified by ANAC Brazil

Atting, January 19

MT-Propeller Entwicklung GmbH has received the ANAC Brazil STC No. 2018S12-10 for the Quiet Fan Jet 5-blade scimitar composite propeller MTV-27-1-E-C-F-R(G)/CFRL240-55d on the Twin Commander 690 / 695 Series with the engines Honeywell TPE-331-5-( ) or TPE-331-10-( ) or TPE-331-10T-( ) or any TPE-331-( ) installed per approved STC which do not exceed 820SHP and 1591 rpm.
The installation is already certified by EASA STC 10060826 and FAA STC No. ST08542NY-A.



MT-Propeller President Gerd Muehlbauer says, that the installation feature the following advantages:

• Reduced take-off distance by approx. 10 % (MTOW, SL, ISA conditions).
• Enhanced cruise performance by 3 to 4 kts (MTOW, ISA).
• Cooler ITTs during engine start up, therefore less engine wear and reduced risk of hot start.
• Lighter than the original propellers by 8 kg (17,7 lbs) per propeller assembly.
• Cabin noise reduction between 3-5 dB(A).
• Unbeatable esthetic ramp appeal.
• The STC complies with the strict German noise regulations 2010 - „Landeplatz Lärmschutz Verordnung“ for unrestricted airport operations in Germany and other European Countries.

The MT-Propeller natural composite blades provide significant inside and outside noise reduction. They have no life limitation and are repairable in case of an FOD.
They also provide best vibration damping characteristics for almost vibration free propeller operation and have bonded on nickel alloy leading edges for superior erosion protection of the blades.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 certified propeller models from 2-blade to 7-blade hydraulically controlled variable pitch propeller, for engines producing up to 5000hp, and 2-blade to 4-blade electrically controlled variable pitch propeller, for engines producing up to 350hp as well as two blade fixed pitch propellers.

The high performance, light weight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels or hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners.

Fulfilling the highest certifications requirements they are also supplemental type certified on Part 25 aircraft.

MT-Propeller is holder of over 210 STCs worldwide and OEM supplier for more than 90% of the European Aircraft Industry as well as 30% of the US Aircraft Industry. Over 22,000 propeller systems with more than 74,000 blades are in service.
150 Million fleet hours where already performed on MT-Propellers. 37 years ago, the first MT-Propeller was shipped.

A factory certified network of 62 service centers, provides best service and maintenance all over the world.

printable version of theTwin Commander picture, for pressreleases only CMYK, 300dpi, 4 MB

more information about the STC (.pdf 2MB)

Press releases 2018