# Airworthiness Directives; Boeing Model 747-400 and -400F Series Airplanes
> **Rule** · Final rule; request for comments. · Published 2003-12-01 · Effective 2003-12-16 · 68 FR 67024
## Document
- **Document number:** 03-29530
- **Category:** airworthiness
- **Manufacturer:** Boeing Model 747-400 and -400F Series
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 68 FR 67024
- **Publication date:** 2003-12-01
- **Effective date:** 2003-12-16
- **FAA docket:** Docket No. 2003-NM-140-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 747-400 and -400F series airplanes. This action requires replacing the rudder feel, centering, and trim mechanism with a new or serviceable rudder feel, centering, and trim mechanism. This action is necessary to prevent degradation/loss of rudder feel and centering, which could result in increased pilot workload and could lead to loss of control of the airplane. This action is intended to address the identified unsafe condition.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/12/01/03-29530/airworthiness-directives-boeing-model-747-400-and--400f-series-airplanes)
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