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


  • July, 2022
STC Cessna 414
  • Cessna 414 with 4-blade MTV-14
  • Cessna 414 with 4-blade MTV-14

STC - Data


  • Type of Aircraft: C 414

  • EASA: 10079705 Replaces LBA STC SA1318 (issued July 12, 2022)
  • FAA: SA01294WI (issued Nov. 23, 2004) update i.p.

  • Applicable Aircraft: Cessna 414 RAM IV, VI, VII
  • Engines: TCM TSIO-520-J,-JB,-N,-NB plus engines modified by RAM
  • Propeller: MTV-14-D-C-F/CF188-30g

  • Advantages:
  • Best vibration damping characteristics
  • Bonded on stainless steel leading edge for best erosion
    protection of the blades
  • Shorter take-off distance by approx. -3% (SL, ISA conditions)
  • Enhanced climb by approx. 5% to 8% (SL, ISA conditions)
  • Cruise performance increased by approx. 3 to 5 kts
    (MTOW, ISA conditions)
  • 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 414 modified with
    RAM III & IV FAA STC SA4379SW
    RAM VI FAA STC SA8424S-D
    RAM VII FAA STC SA09469SC-D

more information about the STC (.pdf 75k)