MT-Propeller - The Winner's Propeller

July, 2017
Logo-MT-PropellerMT-Propeller

STC M7 Aerospace SA226 series


  • M7 Aerospace LP SA-226 with 5-blade MTV-27
  • M7 Aerospace SA226 with 5-blade MTV-27

STC - Data


  • Type of Aircraft: M7 Aerospace SA226

  • EASA STC: 10062183 (issued 13 June, 2017)
  • FAA STC: i.p.
  • TCCA STC: Letter of Acceptance (issued July 10, 2017)


  • Applicable Aircraft: M7 Aerospace SA226-T,
    SA226-AT, SA-226-TC
  • Engines: TPE331-3U-( ), TPE331-3UW-( )
    or TPE331-10UA-( ) or any TPE331-( )
    installed per approved STCS which do not
    exceed 840 SHP and 2000 rpm.
  • Propeller: MTV-27-1-E-C-F-R(G)/CFR235-55a

  • Advantages: (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
    location!
  • Cooler ITTS during engine start up due to a shorter
    starting time of 1/3!

more information about the STC (.pdf 90k)