AVIAT HUSKY A-1C-180 — Service Bulletins

This document is Service Bulletin No. 35 issued by Aviat Aircraft Inc. It mandates the inspection of the engine exhaust muffler for specific aircraft models to ensure safety and prevent potential failures.

• Mandatory compliance for all A-1, A-1A, A-1B, A-1C-180 models.
• Inspection required within 40 hours of operation or at the next annual inspection.
• Daily preflight inspections of the exhaust system are highly recommended.
• Only FAA certified mechanics should perform the inspections.
• Cracks in the muffler can lead to carbon monoxide poisoning and engine failure.
• Repairs must be made according to FAA guidelines if cracks are found.
• Mufflers made from 321 stainless steel require specific welding procedures.
• A compliance letter must be completed and returned to Aviat Aircraft.