# Modification of Class D Airspace; Grand Forks AFB, ND
> **Rule** · Final rule. · Published 2000-02-18 · 65 FR 8269
## Document
- **Document number:** 00-3974
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 65 FR 8269
- **Publication date:** 2000-02-18
- **FAA docket:** Airspace Docket No. 99-AGL-56
## Abstract

This action modifies Class D airspace at Grand Forks AFB, ND. This action amends the effective hours of the Class D surface area to coincide with the airport traffic control tower (ATCT) hours of operation for Grand Forks AFB. The purpose of this action is to clarify when two-way radio communication with the ATCT is required.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/02/18/00-3974/modification-of-class-d-airspace-grand-forks-afb-nd)
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