Fri, Apr 04, 2025
FAA And EASA Approval Granted On Beech 300 Series
MT-Propeller Entwicklung GmbH announced it has received STC approval from both the FAA and European Union Aviation Safety Agency for installation of its 7-blade Silent Seven Propeller on the Beech King Air models 300, 300LW, B300, B300C series aircraft powered by two Pratt & Whitney PT6A-60A and for the same aircraft models powered by the PT6A-67A engines.
The Blackhawk XP67 conversion is also covered by this STC. The propeller was first introduced to the GA market in 2020 with its certification on the Pilatus PC-12 and currently there are over 130 PC-12s flying with the Silent Seven prop.
MT-Propeller began flight testing to get the STC certified for the Silent 7 prop system on the King Air 300 series aircraft.
Martin Albrecht, Vice President of MT-Propeller said the installation provides these advantages:
- General performance improvement (8% take-off & climb)
- No propeller speed restrictions on ground while operating in low idle
- Lower ITTs at high altitude; allowing a top speed increase up to 6 KTAS or longer engine life.
- Unbeatable esthetic ramp appeal
- Significant cabin noise and vibration reduction
- All models comply with the strict German noise regulations 2010– Landeplatz Lärmschutz Verordnung (Landing Site Noise Protection Regulations) for unrestricted airport operations in Germany and other European Countries.
The smaller diameter of the Silent 7 propeller gives better ground clearance on the King Air 300 series. This reduces blade tip erosion and FOD damage, and most FOD damage can be repaired. In addition, the bonded nickel alloy leading edges give further protection from erosion and FOD. Their composite construction and vibration damping characteristics reduce the noise level both outside and inside the aircraft.
More News
A Puff Of Smoke Came Out From The Top Of The Engine Cowling Followed By A Total Loss Of Engine Power On May 9, 2025, about 1020 mountain daylight time, an experimental amateur-buil>[...]
From 2022 (YouTube Edition): Jenny, I’ve Got Your Number... Among the magnificent antique aircraft on display at EAA’s AirVenture 2022 was a 1918 Curtiss Jenny painstak>[...]
Very High Frequency (VHF) The frequency band between 30 and 300 MHz. Portions of this band, 108 to 118 MHz, are used for certain NAVAIDs; 118 to 136 MHz are used for civil air/grou>[...]
“From approximately November 2021 through January 2022, Britton-Harr, acting on behalf of AeroVanti, entered into lease-purchase agreements for five Piaggio-manufactured airc>[...]
Microburst A small downburst with outbursts of damaging winds extending 2.5 miles or less. In spite of its small horizontal scale, an intense microburst could induce wind speeds as>[...]
NTSB Prelim: Lee Aviation LLC JA30 SuperStol
See All