# Proposed AD 2000-NM-386-AD: Dornier Model 328-300 Series Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-12-04
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 29, 2001, 66 FR 17099
- Comments due: April 30, 2001
- Became: [AD 2001-12-04](https://openairdocs.org/ad/2001-12-04)
- Docket: 2000-NM-386-AD
- FR document: 01-7704
- Official PDF: https://openairdocs.org/files/sha256/29/0b/290bd96949a70e0295527fde593acdb36d809a5c79fbe3d88043a76f5513b3b2 (from https://www.govinfo.gov/content/pkg/FR-2001-03-29/pdf/01-7704.pdf)
- Federal Register: https://www.federalregister.gov/documents/2001/03/29/01-7704/airworthiness-directives-dornier-model-328-300-series-airplanes
- Page: https://openairdocs.org/proposed/2000-NM-386-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Dornier Model 328-300 series airplanes. This proposal would require replacement of the hydraulic line between the main hydraulic pump and the pulsation damper in hydraulic system "B" with a new hydraulic flex hose. This action is necessary to prevent cracking in the hydraulic line (due to a production defect), leading to heavy leakage in hydraulic system "B," which could impair the functioning of the airplanes's flaps, roll spoilers, inner ground spoilers, and nose wheel steering. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Mar 29, 2001: Notice of proposed rulemaking (NPRM). (first notice), FR document 01-7704, comments due Apr 30, 2001 (https://www.federalregister.gov/documents/2001/03/29/01-7704/airworthiness-directives-dornier-model-328-300-series-airplanes)

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