March 2019 Issue

Exhaust Essentials

Piston-aircraft exhaust systems are more complicated than they look, and you depend on them for carburetor and cabin heat.

The first order of business in the inspection process is to become familiar with the specific exhaust system and components so that the aircraft is maintained in the desired condition. As always, the place to start is the manufacturer’s maintenance and parts manuals. This is also true when considering an aftermarket exhaust system, including turbochargers, typically installed according to a supplemental type certificate (STC). Aftermarket exhaust and turbocharger providers like Power Flow and Tornado Alley Turbo offer documentation at least as good as the airframe manufacturer’s, including installation instructions, parts manuals and instructions for continued airworthiness.

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