# Airworthiness Directives; Hartzell Propeller Inc., Model HD-E6C-3B/E13890K Propellers
> **Rule** · Final rule. · Published 2003-02-11 · Effective 2003-03-18 · 68 FR 6815
## Document
- **Document number:** 03-3309
- **Category:** airworthiness
- **Manufacturer:** Hartzell
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 68 FR 6815
- **Publication date:** 2003-02-11
- **Effective date:** 2003-03-18
- **FAA docket:** Docket No. 2000-NE-45-AD
## Abstract

This amendment adopts a new airworthiness directive (AD), that is applicable to Hartzell Propeller Inc. HD-E6C-3B/E13890K propellers. This amendment requires the reduction of the original hub certified service (fatigue) life from unlimited hours to 37,400 flight hours. This amendment is prompted by a reevaluation by Hartzell Propeller Inc. of the D-5108-( ) original hub service life certification calculations. The actions specified by this AD are intended to prevent fatigue failure of D-5108-( ) hubs, which may result in loss of airplane control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/02/11/03-3309/airworthiness-directives-hartzell-propeller-inc-model-hd-e6c-3be13890k-propellers)
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