If you’re in need of 11-691-04 or Airframe, from Enstrom Helicopter (Turbine), Aerospace Unlimited is your one stop shop. We carry Helicopter parts and other items as Bearing, Rod-End, 1/4 M/Lh. If there is something specific that you are searching for, browse by Aircraft Model part number such as 11-691-04 in our catalogues to find what you need. 5G560, engines, fasteners are just a few of the 6 billion items that we can inventory. And thanks to the various shipping locations that we have, we can ship almost anywhere. Contact us today to get an immediate quote!