If you’re in need of 1641-474 or Accessory, from Ontic Engineering, Aerospace Unlimited is your one stop shop. We carry Fixed Wing parts and other items as Fuse , .25 Amp. If there is something specific that you are searching for, browse by Aircraft Model part number such as 1641-474 in our catalogues to find what you need. 45934, 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!