# Airworthiness Directives; Airbus Model A319, A320, and A321 Series Airplanes
> **Rule** · Final rule. · Published 1998-09-21 · Effective 1998-10-26 · 63 FR 50129
## Document
- **Document number:** 98-24901
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 63 FR 50129
- **Publication date:** 1998-09-21
- **Effective date:** 1998-10-26
- **FAA docket:** Docket No. 98-NM-15-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A319, A320, and A321 series airplanes, that requires replacing certain toilet rinse valves with modified rinse valves. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent water contamination of the avionics computers, which could result in the display of erroneous or misleading information to the flightcrew, and consequent reduced controllability of the airplane.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/09/21/98-24901/airworthiness-directives-airbus-model-a319-a320-and-a321-series-airplanes)
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