# Proposed AD 99-SW-12-AD: Robinson Helicopter Company (Robinson) Model R44 Helicopters

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 99-23-01
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 4, 1999, 64 FR 42296
- Comments due: October 4, 1999
- Became: [AD 99-23-01](https://openairdocs.org/ad/99-23-01)
- Docket: 99-SW-12-AD
- FR document: 99-20063
- Official PDF: https://openairdocs.org/files/sha256/88/1d/881d62b67d15300c6d0d1231257b85c6ef79649ce70e4681030223dfe5c01a95 (from https://www.govinfo.gov/content/pkg/FR-1999-08-04/pdf/99-20063.pdf)
- Federal Register: https://www.federalregister.gov/documents/1999/08/04/99-20063/airworthiness-directives-robinson-helicopter-company-robinson-model-r44-helicopters
- Page: https://openairdocs.org/proposed/99-SW-12-AD

## Summary

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to Robinson Model R44 helicopters, that currently requires removing and replacing the pilot's cyclic control grip assembly (grip assembly) with an airworthy grip assembly. This action would require the same actions as the current AD but would change a part number referenced in the current AD. This proposal is prompted by the discovery of an error in the part number (P/N) of the current AD. The actions specified by the proposed AD are intended to prevent use of a grip assembly that may crack, resulting in failure of the grip assembly and subsequent loss of control of the helicopter.

## Notices in this docket

- Aug 4, 1999: Notice of proposed rulemaking (NPRM). (first notice), FR document 99-20063, comments due Oct 4, 1999 (https://www.federalregister.gov/documents/1999/08/04/99-20063/airworthiness-directives-robinson-helicopter-company-robinson-model-r44-helicopters)

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