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Five-blade MTV-27 is top of the props
According to manufacturer MT-Propeller, a five-blade propeller design offers no end of benefits to operators, including reduced cost, noise and vibration, longer TBO, greater ground clearance and takeoff performance.
EASA has approved MT-Propeller's five-blade MT-27.

MT-Propeller has received STC from EASA for its Quiet Fan Jet composite propeller on the Beech 1900, 1900C and 1900D powered by two Pratt & Whitney PT6A-65B or -67D propeller turbines. The FAA STC is in progress.

VP Martin Albrecht says that there are a number of advantages with a five-blade prop over compared with four blades: the five-blade MT-Propeller has a smaller diameter of about eight inches compared to the original four-blade propeller, which means more ground clearance of about four inches; take-off of the Beech 1900 is improved by 4 per cent; the five-blade prop reduces propeller noise by up to five dB; the MTV-27 has bonded on wide chord nickel alloy leading edges for superior erosion protection of the blades; TBO is 4,000 hours or six years; no intermediate inspections are needed between the TBO which requires the propeller removal; parts costs are reduced and there is no rpm restriction.

The 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 a 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 5000hp, 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 company holds more than 210 STCs worldwide and is the OEM supplier for more than 90 per cent of the European aircraft industry as well as 30 per cent of the US industry. 23,000 propeller systems with more than 74,000 blades are in service.

150 million fleet hours have already been performed on MT-Propellers, and the first MT-Propeller was shipped 37 years ago.

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

Other News
 
Hartzell Propeller elevates customer service experience
November 6, 2024
Hartzell is introducing a propeller exchange programme; expanding its service network across Ohio, Texas, California and Canada; and launching a website for appointments and for searching inventory.
FAA to approve of Blackhawk’s XP67A Engine+ upgrade
October 22, 2024
Paired with the MT five-blade composite propeller, the XP67A Engine+ upgrade with Pro Line Fusion avionics transforms King Air 360s into high-performance, fuel-efficient aircraft.
MT-Propeller celebrates opening of three production buildings
October 3, 2024
All metal propeller parts can now be manufactured at HQ. The hangars also provide additional space for the direct installation of propellers on customer aircraft and increase sales, spare parts and shipping capacity.