MT-Propeller FAA STC Approved for Pilatus PC-12/47G

MT-Propeller Entwicklung GmbH has secured an amended Supplemental Type Certificate (STC) from the Federal Aviation Administration (FAA) to install its seven-blade “Silent 7” composite propeller on the Pilatus PC-12/47G. The approval, issued on June 02, 2026, expands the certified applications for the MTV-47 propeller system without requiring engine modifications.

The company publicly announced the Certification on June 11, 2026. The FAA approval (STC SA02742NY) follows the European Union Aviation Safety Agency (EASA) STC issued on January 22, 2026, and a Transport Canada Civil Aviation (TCCA) Letter of Acceptance from July 31, 2024. The upgrade targets operators seeking improved short-field performance and compliance with stringent European noise Regulations.

Performance and noise reduction metrics

According to MT-Propeller’s official STC data sheet, the MTV-47 installation delivers measurable performance gains for the PC-12/47G. The certified ground roll distance is reduced by approximately 10 percent, while the takeoff distance over a 50-foot obstacle decreases by 15 percent compared to the original four-blade metal propeller. The composite propeller has a maximum diameter of 102.36 inches (260 cm) and an installed weight of 221.8 pounds (100.6 kg), including the spinner.

Noise abatement is a primary feature of the “Silent 7” design. The manufacturer reports an approximate 4 dB(A) reduction in exterior noise levels. Inside the aircraft, cabin noise is reduced by 6 to 7 dB(A), depending on the specific seating location. This acoustic performance allows the PC-12/47G to comply with strict European noise standards, including Germany’s 2010 Landeplatz Lärmschutz Verordnung, enabling unrestricted operations at noise-sensitive airports.

Engine compatibility and North American expansion

The amended STC covers the PC-12/47G alongside previously certified models, including the PC-12, PC-12/45, PC-12/47, and PC-12/47E. The MTV-47 propeller is approved for use with Pratt & Whitney Canada PT6A-67B, PT6A-67P, and PT6E-67XP engines. MT-Propeller emphasized that the installation is a direct bolt-on upgrade requiring no modifications to the existing powerplant.

The FAA certification aligns with MT-Propeller’s recent efforts to expand its support infrastructure in North-America. In April 2026, the company announced the opening of MT-Propeller Canada Inc., a joint venture with AMK Aviation Inc. based in Murillo, Ontario. The new facility is designed to provide enhanced service, spare parts distribution, and field support for North American operators adopting the composite propeller systems.

AirPro News analysis

We note a discrepancy in the performance figures marketed by regional distributors compared to the official certification data. While Finnoff Aviation Products, the exclusive North American distributor for the upgrade, cites a 20 percent reduction in ground roll and a 23 percent reduction in obstacle clearance distance, MT-Propeller’s official June 2026 STC data sheet lists more conservative figures of 10 percent and 15 percent, respectively. Operators evaluating the upgrade should base their operational planning on the certified flight manual supplements rather than distributor marketing materials. The addition of the PC-12/47G to the STC ensures that newer airframes can utilize the seven-blade system, which has become increasingly popular for operators flying into noise-restricted European airfields or backcountry strips requiring maximum short-field performance.

Sources: MT-Propeller STC Data Sheet