# Airworthiness Directives; Various Aircraft Equipped With Wing Lift Struts
> **Rule** · Final rule. · Published 2015-04-29 · Effective 2015-06-03 · 80 FR 23699
## Document
- **Document number:** 2015-08732
- **Category:** airworthiness
- **Manufacturer:** Various
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 80 FR 23699
- **Publication date:** 2015-04-29
- **Effective date:** 2015-06-03
- **FAA docket:** Docket No. FAA-2014-1083
## Abstract

We are superseding Airworthiness Directive (AD) 99-01-05 R1, which applied to certain aircraft equipped with wing lift struts. AD 99-01-05 R1 required repetitively inspecting the wing lift struts for corrosion; repetitively inspecting the wing lift strut forks for cracks; replacing any corroded wing lift strut; replacing any cracked wing lift strut fork; and repetitively replacing the wing lift strut forks at a specified time for certain airplanes. This new AD retains all requirements of AD 99-01-05R1 and adds additional airplane models to the Applicability section. This AD was prompted by a report that additional Piper Aircraft, Inc. model airplanes should be added to the Applicability section. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2015/04/29/2015-08732/airworthiness-directives-various-aircraft-equipped-with-wing-lift-struts)
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