# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2025-04-08 · Effective 2025-05-13 · 90 FR 15111
## Document
- **Document number:** 2025-06005
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 15111
- **Publication date:** 2025-04-08
- **Effective date:** 2025-05-13
- **FAA docket:** Docket No. FAA-2024-0028
## Abstract

The FAA is superseding Airworthiness Directive (AD) 2021-09- 06, which applied to all The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. AD 2021-09-06 required repetitive inspections for cracking of the left- and right-hand outboard chords of certain frame fittings and failsafe straps at a certain station around eight fasteners, and repair if any cracking is found. This AD was prompted by additional reports of cracking in the area and a subsequent determination that additional inspections are needed to address the unsafe condition. This AD requires repetitive detailed and ultrasonic inspections for cracking of the left- and right-hand sides of certain frame fittings and failsafe straps, and repair if any cracking is found. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/04/08/2025-06005/airworthiness-directives-the-boeing-company-airplanes)
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