# Airworthiness Directives; EXTRA Flugzeugbau GmbH Model EA-300 Airplanes
> **Rule** · Final rule. · Published 1998-03-11 · Effective 1998-04-24 · 63 FR 11821
## Document
- **Document number:** 98-6019
- **Category:** airworthiness
- **Manufacturer:** EXTRA Flugzeugbau GmbH Model EA-300
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 11821
- **Publication date:** 1998-03-11
- **Effective date:** 1998-04-24
- **FAA docket:** Docket No. 97-CE-81-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that applies to certain EXTRA Flugzeugbau GmbH (EXTRA) Model EA-300 airplanes. This AD requires removing the elevator mass balance assemblies and replacing them with reinforced elevator mass balance assemblies of improved design. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. The actions specified by this AD are intended to prevent damage and possible jamming of the airplane's control system, which, if not corrected, could cause loss of control of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/03/11/98-6019/airworthiness-directives-extra-flugzeugbau-gmbh-model-ea-300-airplanes)
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