# Airworthiness Directives; Boeing Model 777-200 and -300 Series Airplanes Equipped with Rolls-Royce Engines
> **Rule** · Final rule; request for comments. · Published 2006-12-27 · Effective 2007-01-11 · 71 FR 77586
## Document
- **Document number:** E6-22040
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 777-200 and -300 Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 71 FR 77586
- **Publication date:** 2006-12-27
- **Effective date:** 2007-01-11
- **FAA docket:** Docket No. FAA-2006-26675
## Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 777-200 and -300 series airplanes equipped with Rolls-Royce engines. This AD requires repetitive inspections to detect cracks of the outer V-blades of the thrust reverser, and corrective action if necessary. This AD also provides for optional terminating action for the repetitive inspections. This AD results from reports of cracked outer V-blades in the thrust reversers. We are issuing this AD to prevent separation of a thrust reverser from the airplane during normal reverse thrust or during a refused takeoff, which could result in impact damage to other airplane areas. If a thrust reverser separates from the airplane during a refused takeoff, the engine could produce forward thrust, resulting in unexpected thrust asymmetry and a possible runway excursion.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/12/27/E6-22040/airworthiness-directives-boeing-model-777-200-and--300-series-airplanes-equipped-with-rolls-royce)
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