(803) 641-9999

Twin Commander STC



On July 19, 2017 MT-Propeller received the FAA STC SA03933NY for the installation of the five-blade MTV-27 Propeller on the Twin Commander 690/695. The STC features shorter take off distance by approx. 10%, enhanced cruise performance and a significant inside and outside noise reduction. TBO is at 3500 or 6 years and will soon be increased to 4000 or 6 years. Download brochure for more informatiion on the Quiet Fan Jet Propeller Series for the Twin Commander aircraft.

Full Retail price for a pair of 5-bladed, constant speed propellers with feathering and nickel leading edges is $98,500.00 in exchange* for the existing propellers and spinner assemby. Freight from Germany and Installation are additional.
*There is a $5,000 missing core fee for each prop not returned ($10,000 per aircraft)

STC Kit Includes:
Two 5-Blade Full Feathering Constant Speed Propellers
Spinner Assemby
Slip Ring Assemby
Deice Kit

Please contact Mike Laver (803) 641-9999 or This email address is being protected from spambots. You need JavaScript enabled to view it.  for ordering and for more details.

 On February 24, 2017 the Chicago Aircraft Certification Office granted field approval for the installation of the 5-blade MT-Propeller on the Twin Commander used for the STC field testing in Aiken, SC.

TC UPDATE: On January 27, 2017, the European Aviation Safety Agency (EASA) issued Supplemental Type Certifcate 100608265 to certify installation of the 5-blade MT-Propeller, Model MTV-27-1-E-C-F-R(G)/CFR(...) on the Twin Commander.  The specifics are as follows:

Original Type Certificate Number: US 2A4
Type: Twin Commander 600 Series
 Model: 690, 690A, 690B, 690C, 690D, 695, 695A, 695B

These are the same propellers manufactured for the MU-2 and offer the added benefits to your Twin Commander:
  • Reduced take off roll
  • Enhanced cruise performance
  • Significant cabin noise reduction as well as outside noise reduction
  • Nearly vibration free propeller operations
  • Cooler engine starts
  • Better erosion protection
  • Unlimited blade life
  • Superior ramp appeal

EASA Supplemental Type Certificate 10060826