# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2025-02-10 · Effective 2025-03-17 · 90 FR 9201
## Document
- **Document number:** 2025-02398
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 9201
- **Publication date:** 2025-02-10
- **Effective date:** 2025-03-17
- **FAA docket:** Docket No. FAA-2024-1690
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company (Boeing) Model 747-100, 747-100B, 747-100B SUD, 747- 200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SP, and 747SR series airplanes. This AD was prompted by a report of improper inner diameter grinding of landing gear outer cylinders, resulting in possible heat damage to the outer cylinder of the nose landing gear (NLG), body landing gear (BLG), and wing landing gear (WLG). This AD requires replacing any affected outer cylinders. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/02/10/2025-02398/airworthiness-directives-the-boeing-company-airplanes)
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