# Proposed AD FAA-2022-0891: Various Airplanes, Helicopters, and Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2023-09-09
- Products: Aerostar
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 27, 2022, 87 FR 45036
- Comments due: November 4, 2022
- Became: [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09)
- Docket: FAA-2022-0891 (https://www.regulations.gov/docket/FAA-2022-0891, where comments are filed)
- Project: AD-2022-00585-A,E,R
- FR document: 2022-16139
- Official PDF: https://openairdocs.org/files/sha256/db/ec/dbecfb245780d888ffcf24188018dde4048e76ff5e4f806c99eac1adc044c111 (from https://www.govinfo.gov/content/pkg/FR-2022-07-27/pdf/2022-16139.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/07/27/2022-16139/airworthiness-directives-various-airplanes-helicopters-and-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-16139-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0891

## Summary

The FAA proposes to adopt 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 proposed 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 proposed AD would establish a life limit for the spot-welded, multi- segment exhaust tailpipe v-band coupling and require repetitively inspecting the spot-welded, multi-segment exhaust tailpipe v-band coupling. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 27, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-16139, comments due Nov 4, 2022 (https://www.federalregister.gov/documents/2022/07/27/2022-16139/airworthiness-directives-various-airplanes-helicopters-and-engines)

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