# Airworthiness Directives; Textron Aviation, Inc. (Type Certificate Previously Held by Cessna Aircraft Company) Airplanes
> **Rule** · Final rule. · Published 2026-02-06 · Effective 2026-03-13 · 91 FR 5283
## Document
- **Document number:** 2026-02415
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 91 FR 5283
- **Publication date:** 2026-02-06
- **Effective date:** 2026-03-13
- **FAA docket:** Docket No. FAA-2025-5037
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Textron Aviation, Inc., Model 525B airplanes. This AD was prompted by the manufacturer's revision of the aircraft maintenance manual (AMM) to introduce more restrictive inspection intervals. This AD requires revising the Airworthiness Limitations Section (ALS) of the existing AMM or instructions for continued airworthiness (ICA) and the existing approved maintenance or inspection program, as applicable. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/02/06/2026-02415/airworthiness-directives-textron-aviation-inc-type-certificate-previously-held-by-cessna-aircraft)
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