Press Release

The blades have a TBO of 4,500 hours or six years.

Issued by MT-Propeller .

June 24, 2021

MT-Propeller Entwicklung GmbH has received a revision of the EASA STC 10050861 R2 installing the five-blade MTV-27-1-(E,N)-C-F-R(P)/CFR260-65b Quiet Fan Jet propeller on the Beech King Air 300/350 series powered by P&WC PT6A-60A /-67A engines with a MTOW up to 17,500 lbs. The FAA STC revision is in progress.

According to MT-Propeller president Gerd Muehlbauer, the installation of the five-blade MT-Propeller on the Beech King Air 300/350 series:

- provides best vibration damping characteristics for almost vibration free propeller operations

- has bonded on nickel alloy leading edges for for superior erosion protection of the blades

- provides a general performance improvement (8% take-off and climb, 4-5 kts cruise)

- has no propeller speed restrictions on ground while operating in low idle

- has more ground clearance for less FODs

- has lower ITTs during start-up for less engine wear

- provides a significant cabin noise and vibration reduction

- has an unbeatable aesthetic ramp appeal

- has no life limitation

- has FOD repairable blades

- has the longest industry TBO of 4,500 hours or six years

All models comply with the strict 2010 German Landeplatz Lärmschutz Verordnung noise regulations for unrestricted airport operation in Germany and other European countries.

MT-Propeller is the world leading natural composite propeller manufacturer with 30 propeller models from two-blade to seven-blade hydraulically controlled variable pitch propellers for engines producing up to 5,000hp, and two-blade to four-blade electrically controlled variable pitch propellers 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 the holder of over 220 STCs worldwide and the 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 over 87,000 blades are in service, and 180 million fleet hours have been performed on MT-Propellers.

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