# Airworthiness Directives; Hamilton Standard Division and Hamilton Sundstrand Corporation Propellers
> **Rule** · Final rule. · Published 2013-08-15 · Effective 2013-09-19 · 78 FR 49660
## Document
- **Document number:** 2013-19649
- **Category:** airworthiness
- **Manufacturer:** Hamilton Standard Division and Hamilton Sundstrand Corporation
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 78 FR 49660
- **Publication date:** 2013-08-15
- **Effective date:** 2013-09-19
- **FAA docket:** Docket No. FAA-2013-0262
## Abstract

We are adopting a new airworthiness directive (AD) for Hamilton Standard Division model 6/5500/F and 24PF and Hamilton Sundstrand Corporation model 14RF, 14SF, 247F, and 568F series propellers. This AD was prompted by the amount of corrosion detected during major inspections (MI). This AD requires incorporating inspections, based on a calendar time, into the propeller maintenance schedule. We are issuing this AD to prevent corrosion that could result in propeller failure and loss of airplane control.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/08/15/2013-19649/airworthiness-directives-hamilton-standard-division-and-hamilton-sundstrand-corporation-propellers)
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