# Airworthiness Directives; Piper Aircraft, Inc. Airplanes
> **Rule** · Final rule; request for comments. · Published 2016-04-11 · Effective 2016-04-26 · 81 FR 21261
## Document
- **Document number:** 2016-07580
- **Category:** airworthiness
- **Manufacturer:** Piper
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 81 FR 21261
- **Publication date:** 2016-04-11
- **Effective date:** 2016-04-26
- **FAA docket:** Docket No. FAA-2016-5432
## Abstract

We are superseding Airworthiness Directive (AD) 2015-20-13 for certain Piper Aircraft, Inc. Models PA-28-161, PA-28-181, and PA-28R- 201 airplanes. AD 2015-20-13 required inspecting the right wing rib at wing station 140.09 for cracks and taking necessary corrective action. This AD retains the actions for AD 2015-20-13 and adds airplanes to the applicability. This AD was prompted by reports that additional airplanes have been found with the same cracks. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/04/11/2016-07580/airworthiness-directives-piper-aircraft-inc-airplanes)
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