# Airworthiness Directives; Boeing Model 757 Series Airplanes
> **Rule** · Final rule. · Published 2001-11-26 · Effective 2001-12-31 · 66 FR 58922
## Document
- **Document number:** 01-29186
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 757 Series
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 66 FR 58922
- **Publication date:** 2001-11-26
- **Effective date:** 2001-12-31
- **FAA docket:** Docket No. 2000-NM-405-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 757 series airplanes, that requires a review of maintenance records or an inspection to determine the serial numbers of geared rotary actuators (GRA) for the leading edge slats, and replacement of certain actuators with new or reworked actuators. This action is necessary to prevent a fractured spring washer in a GRA, which could lead to a disconnect in the GRA, and result in a slat skew condition and consequent reduced controllability of the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2001/11/26/01-29186/airworthiness-directives-boeing-model-757-series-airplanes)
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