# Airworthiness Directives; The Boeing Company Airplanes
> **Rule** · Final rule. · Published 2022-09-26 · Effective 2022-10-31 · 87 FR 58259
## Document
- **Document number:** 2022-20773
- **Category:** airworthiness
- **Manufacturer:** The Boeing Company
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 58259
- **Publication date:** 2022-09-26
- **Effective date:** 2022-10-31
- **FAA docket:** Docket No. FAA-2022-0154
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 777 airplanes. This AD was prompted by a report of a crack found in a front spar lower chord undergoing an underwing longeron replacement. This AD requires repetitive inspections for cracking of the left and right side ring chords, repair angles, front spar lower chords, and front spar webs (depending on configuration) common to the underwing longeron located at station (STA) 1035; modification of the front spar lower chord for some airplanes; repetitive post-modification inspections; 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/2022/09/26/2022-20773/airworthiness-directives-the-boeing-company-airplanes)
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