# Airworthiness Directives; Piper Aircraft, Inc. Airplanes
> **Rule** · Final rule. · Published 2020-11-23 · Effective 2020-12-28 · 85 FR 74598
## Document
- **Document number:** 2020-25690
- **Category:** airworthiness
- **Manufacturer:** Piper
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 85 FR 74598
- **Publication date:** 2020-11-23
- **Effective date:** 2020-12-28
- **FAA docket:** Docket No. FAA-2017-1059
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Piper Aircraft, Inc. (Piper) Models PA-28-140, PA-28-150, PA- 28-160, PA-28-180, PA-28-235, PA-32-260, and PA-32-300 airplanes. This AD was prompted by reports of corrosion found in an area of the main wing spar not easily accessible for inspection. This AD requires inspecting the left and right main wing spars for corrosion, and, if corrosion is found, taking all necessary corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2020/11/23/2020-25690/airworthiness-directives-piper-aircraft-inc-airplanes)
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