# Proposed AD 98-CE-91-AD: British Aerospace Jetstream Model 3201 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-07-09
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 8, 1998, 63 FR 67633
- Comments due: January 11, 1999
- Became: [AD 99-07-09](https://openairdocs.org/ad/99-07-09)
- Docket: 98-CE-91-AD
- FR document: 98-32471
- Official PDF: https://openairdocs.org/files/sha256/30/52/3052489459015a1d6bac0a9dc6ec4619cd37e551e4f71edb0fd4e95c18c122d0 (from https://www.govinfo.gov/content/pkg/FR-1998-12-08/pdf/98-32471.pdf)
- Federal Register: https://www.federalregister.gov/documents/1998/12/08/98-32471/airworthiness-directives-british-aerospace-jetstream-model-3201-airplanes
- Page: https://openairdocs.org/proposed/98-CE-91-AD

## Summary

This document proposes to adopt a new airworthiness directive (AD) that would apply to certain British Aerospace Jetstream Model 3201 airplanes. The proposed AD would require replacing the nose landing gear downlock actuator, the flap actuator, the steering selector valve, the hydraulic reservoir, and the emergency selector valve. The proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for the United Kingdom. The actions specified by the proposed AD are intended to prevent internal corrosion of the hydraulic components on airplanes where these components were exposed to water contamination, which could result in reduced or loss of control of the airplane.

## Notices in this docket

- Dec 8, 1998: Notice of proposed rulemaking (NPRM). (first notice), FR document 98-32471, comments due Jan 11, 1999 (https://www.federalregister.gov/documents/1998/12/08/98-32471/airworthiness-directives-british-aerospace-jetstream-model-3201-airplanes)

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