• MT-Propeller USA LogoMT-Propeller USA, Inc.


  • December, 2019
STC Cessna 414A
  • Cessna 414 with 4-blade MTV-14
  • Cessna 414 A with 4-blade MTV-14

STC - Data


  • Type of Aircraft: C 414A

  • EASA: 10043106 R1 (issued Nov 07, 2023)
  • FAA: i.p.

  • Applicable Aircraft: Cessna 414A
    Modified by FAA STC SA4546SW (Ram IV)
    Modified by FAA STC SA09105SC-D (Ram VII)
  • Engines: Teledyne Continental Motors TSIO-520-N or -NB or TSIO-520-NB
    modified per FAA STC SE4327SW or SE09104SC or SE091261SC
  • Propeller: MTV-14-D-C-F/CF188-30()


  • Advantages:
  • Best vibration damping characteristics
  • Bonded on stainless steel leading edge for best erosion
    protection of the blades
  • Shorter take-off distance by approx. -6% (SL, ISA conditions)!
  • Enhanced climb by up to 5% to 8% (SL, ISA conditions)!
  • Cruise performance increased by approx. 3 to 5 kts
    (MTOW, ISA conditions depending on altitude and power setting!
  • Approx. 20 lbs less weight than the original propellers!
  • Unlimited blade life!
  • FOD repairable blades!
  • Significant inside and outside noise reductions!
  • MT-Propeller modification also includes Cessna 414s modified
    with some RAM conversions!
  • Turbine smoothness!

more information about the STC (.pdf 600k)