# Airworthiness Directives; Boeing Model 777-200, -200LR, -300, and -300ER Series Airplanes
> **Rule** · Final rule. · Published 2007-12-17 · Effective 2008-01-22 · 72 FR 71212
## Document
- **Document number:** E7-24338
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 72 FR 71212
- **Publication date:** 2007-12-17
- **Effective date:** 2008-01-22
- **FAA docket:** Docket No. FAA-2007-28854
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all Boeing Model 777-200, -200LR, -300, and -300ER series airplanes. This AD requires doing initial and repetitive inspections for cracking of the elevator actuator fittings, and replacing any cracked fitting with a new fitting. This AD results from a report that a cracked left elevator actuator fitting was found on a Model 777 airplane. We are issuing this AD to detect and correct a cracked actuator fitting, which could detach from the elevator and lead to an unrestrained elevator and an unacceptable flutter condition, which could result in loss of airplane control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2007/12/17/E7-24338/airworthiness-directives-boeing-model-777-200--200lr--300-and--300er-series-airplanes)
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