Aerospace Welding Minneapolis (AWI) has received a PMA from the Federal Aviation Administration (FAA) to produce and sell new replacement exhaust stacks and mufflers for the popular Piper PA 28R-200/201/201T series. All of the components are constructed from 321 stainless steel material. The welding is done by professional welders in the United States who have extensive experience in fabricating and welding stainless steel parts for aircraft engines and mounts.
Piper owners can order individual units or a complete replacement package that would include left front and rear stacks, right front and rear stacks and two new mufflers. The systems can be installed by most A&P mechanics in about an hour.