last update July, 2022
STC M7 Aerospace SA226 series
M7 Aerospace SA226 with 5-blade MTV-27
STC - Data
Type of Aircraft:
M7 Aerospace SA226
(issued 14 Dec, 2021)
(issued Nov 20, 2019)
Letter of Acceptance
(issued July 10, 2017)
M7 Aerospace SA226-T,
TPE331-3U-( ), TPE331-3UW-( )
or TPE331-10UA-( ) or any TPE331-( )
installed per approved STCS which do not
exceed 840 SHP and 2000 rpm.
(Performance data are based on MTOW, ISA)!
Best vibration damping characteristics for
almost vibration free propeller operations!
Bonded on nickel alloy leading edge for
best erosion protection of the blades!
No engine modifications (no cam or beta tube change)!
Ground roll distance reduced by approx. 30 m (98 ft)!
Two engine and single engine climb performance slightly
improved by up to 100 ft/min!
Cruise performance slightly improved by up to 4 kts!
Same weight of MT 5-blade natural composite propeller
compared to original 3-blade metal propeller and
30 lbs lighter than the 4-blade metal prop!
Unlimited blade life, FOD repairable blades!
More ground clearance for less FODs!
Significant inside and outside noise reductions!
Cabin noise is reduced by 3 to 5 dB(A) depending on
Cooler ITTS during engine start up due to a shorter
starting time of 1/3!
about the STC (.pdf 90k)