# Establishment of Class E Airspace; Stanford/Biggerstaff Field, Stanford, MT
> **Rule** · Final rule. · Published 2025-03-20 · Effective 2025-08-07 · 90 FR 13062
## Document
- **Document number:** 2025-04416
- **Category:** airspace
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 90 FR 13062
- **Publication date:** 2025-03-20
- **Effective date:** 2025-08-07
- **FAA docket:** Docket No. FAA-2024-2391
## Abstract

This action establishes Class E airspace extending upward from 700 feet above the surface at Stanford/Biggerstaff Field, Stanford, MT. This action supports the airport's transition from visual flight rules (VFR) to instrument flight rules (IFR) operations.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/03/20/2025-04416/establishment-of-class-e-airspace-stanfordbiggerstaff-field-stanford-mt)
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