# Amendment of Class E Airspace; Greenfield, IA
> **Rule** · Final rule. · Published 2012-01-30 · Effective 2012-04-05 · 77 FR 4459
## Document
- **Document number:** 2012-1791
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 77 FR 4459
- **Publication date:** 2012-01-30
- **Effective date:** 2012-04-05
- **FAA docket:** Docket No. FAA-2011-0846
## Abstract

This action amends Class E airspace for Greenfield, IA. Decommissioning of the Greenfield non-directional beacon (NDB) at Greenfield Municipal Airport, has made this action necessary to enhance the safety and management of Instrument Flight Rule (IFR) operations at the airport.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/01/30/2012-1791/amendment-of-class-e-airspace-greenfield-ia)
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