# Amendment of Class D and E Airspace; North Philadelphia, PA
> **Rule** · Final rule. · Published 2011-12-14 · Effective 2012-02-09 · 76 FR 77669
## Document
- **Document number:** 2011-31854
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 76 FR 77669
- **Publication date:** 2011-12-14
- **Effective date:** 2012-02-09
- **FAA docket:** Docket No. FAA-2011-0625
## Abstract

This action amends Class D and Class E airspace at Northeast Philadelphia Airport, North Philadelphia, PA, due to the closing of Willow Grove Naval Air Station and Warminster Naval Air Warfare Center (NAWC). This action also corrects a typographic error in the regulatory text for the Class E airspace radius and ceiling level, and adjusts the geographic coordinates of the airport. This action enhances the safety and airspace management of Instrument Flight Rules (IFR) operations in the North Philadelphia, PA, airspace area.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/12/14/2011-31854/amendment-of-class-d-and-e-airspace-north-philadelphia-pa)
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