CESSNA TURBO 210L — Supplemental Type Certificate

This document is an Airworthiness Directive (AD) issued by the FAA, focusing on turbocharged, reciprocating engine-powered airplanes, including the Cessna 421 series. It addresses safety concerns related to failures of spot-welded, multi-segment v-band couplings at the tailpipe to turbocharger exhaust housing flange. The AD establishes a life limit for these couplings and mandates repetitive inspections to ensure safety. The directive is crucial for maintaining the airworthiness of affected aircraft and preventing potential in-flight hazards such as smoke or fire due to exhaust system failures. The document outlines the background of the issue, the rationale for the AD, and the specific requirements for compliance.

• The AD establishes a 500-hour life limit for spot-welded, multi-segment v-band couplings.
• Repetitive inspections are required every 6 months or every 100 hours of flight time for two years after the AD's effective date.
• The AD applies to turbocharged, reciprocating engine-powered airplanes, including the Cessna 421 series.
• Airplanes with specific STCs that eliminate the v-band coupling are exempt from this AD.
• Failure to comply with the AD could lead to serious safety incidents, including in-flight fires.