# Airworthiness Directives; Hartzell Propeller Inc. Model HC-E4A- 3(A,I) Propellers
> **Rule** · Final rule; request for comments. · Published 1998-01-28 · Effective 1998-02-12 · 63 FR 4160
## Document
- **Document number:** 98-1742
- **Category:** airworthiness
- **Manufacturer:** Hartzell
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 63 FR 4160
- **Publication date:** 1998-01-28
- **Effective date:** 1998-02-12
- **FAA docket:** Docket No. 97-ANE-35-AD
## Abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to Hartzell Propeller Inc. Model HC-E4A-3(A,I) propellers. This action requires replacing propeller blade counterweight clamp bolts with improved bolts. This amendment is prompted by reports of a manufacturing defect in the counterweight clamp bolts that resulted in the blade counterweight separating and causing damage to the propeller. The actions specified in this AD are intended to prevent counterweight clamp bolt failure, which can result in propeller blade counterweight separation and damage to the propeller and aircraft.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/01/28/98-1742/airworthiness-directives-hartzell-propeller-inc-model-hc-e4a--3ai-propellers)
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