# Airworthiness Directives; Various Airplanes, Helicopters, and Engines
> **Rule** · Final rule. · Published 2023-06-12 · Effective 2023-07-17 · 88 FR 37975
## Document
- **Document number:** 2023-12417
- **Category:** airworthiness
- **Manufacturer:** Various
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 88 FR 37975
- **Publication date:** 2023-06-12
- **Effective date:** 2023-07-17
- **FAA docket:** Docket No. FAA-2022-0891
## Abstract

The FAA is adopting a new airworthiness directive (AD) for turbocharged, reciprocating engine-powered airplanes and helicopters and turbocharged, reciprocating engines with a certain v-band coupling installed. This AD was prompted by multiple failures of spot-welded, multi-segment v-band couplings at the tailpipe to the turbocharger exhaust housing flange (also referred to as "spot-welded, multi- segment exhaust tailpipe v-band coupling"). This AD establishes a life limit for the spot-welded, multi-segment exhaust tailpipe v-band coupling and requires repetitively inspecting the spot-welded, multi- segment exhaust tailpipe v-band coupling. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/06/12/2023-12417/airworthiness-directives-various-airplanes-helicopters-and-engines)
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