Page 28 - April 25

VALUE ADDED
7-Blade Whisper Prop for King Air 300
Series Earns FAA and EASA Approval
The Federal Aviation Administration and the European
Union Aviation Safety Agency have granted MT-Propeller
Entwicklung GmbH supplemental type certificate
approval for the 7-blade Whisper Prop system, now
available for the King Air 300 series aircraft.
BLR Aerospace LLC is the worldwide distributor of
MT-Propellers on the King Air and Beech 1900 platforms
and said of this advanced propeller option: The new
7-blade Whisper Prop is the quietest propeller available
for the King Air 300 series. Its design is built on MT’s
proven natural composite technology, previously used
in the 5-blade propeller for the King Air platform. Each
blade features a highly developed structural resin-infused
wood core wrapped in carbon fiberglass composite skins,
ensuring exceptional quietness, durability and efficiency.
In conjunction with the prop’s certification news,
Blackhawk Aerospace announced that its upgrade
featuring Pratt & Whitney PT6A-67A engines is now
certified with the 7-blade prop for King Air 350 series
aircraft.
“At Blackhawk, we’re always looking for ways to help
our operators get more performance, efficiency and
value out of their aircraft,” said Edwin Black, president
at Blackhawk. “The certification of the 7-blade Whisper
Prop with our XP67A Engine+ Upgrade is a huge win.
It’s quieter, smoother and makes an already incredible
upgrade even better. We’re proud to offer this upgrade
alongside MT-Propeller and BLR Aerospace to bring this
innovation to the King Air community.”
A King Air 350 featuring the Blackhawk XP67A
Engine+ Upgrade and the MT 7-blade composite propeller
was on static display during FBO Day at the King Air
Gathering in March in Phoenix, Arizona. BLR’s booth
at the Sheraton Phoenix Downtown also featured the
7-blade prop for the duration of the King Air Gathering.
According to MT-Propeller, the 7-blade system was
introduced to the general aviation market in 2020 on
the Pilatus PC-12 and more than 130 PC-12 aircraft
have since had the 7-blade prop installed. The company
26 •
­ KING AIR MAGAZINE APRIL 2025