# Airworthiness Directives; Lycoming Engines Reciprocating Engines
> **Rule** · Final rule; request for comments. · Published 2017-06-13 · Effective 2017-06-28 · 82 FR 26982
## Document
- **Document number:** 2017-12075
- **Category:** airworthiness
- **Manufacturer:** Lycoming
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 26982
- **Publication date:** 2017-06-13
- **Effective date:** 2017-06-28
- **FAA docket:** Docket No. FAA-2016-9512
## Abstract

We are adopting a new airworthiness directive (AD) for all Lycoming TIO-540-AJ1A reciprocating engines. This AD requires initial and repetitive inspections of engine exhaust system weld joints and torque checking the exhaust pipe flange mounting nuts. This AD was prompted by several reports of engine exhaust leaks. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/06/13/2017-12075/airworthiness-directives-lycoming-engines-reciprocating-engines)
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