# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2026-03-12 · Effective 2026-04-16 · 91 FR 12059
## Document
- **Document number:** 2026-04829
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 91 FR 12059
- **Publication date:** 2026-03-12
- **Effective date:** 2026-04-16
- **FAA docket:** Docket No. FAA-2025-0618
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes. This AD was prompted by discovery of a crack at one of the forward lower fastener holes following replacement of a cracked underwing longeron (UWL) fitting. This AD requires performing an open hole high frequency eddy current (HFEC) inspection for cracks of the fastener holes common to the UWL fitting, upper drag splice angle, and lower drag splice angle, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2026/03/12/2026-04829/airworthiness-directives-the-boeing-company-airplanes)
---
*AI Analytics · CC0 1.0*