# Harmonization of Various Airworthiness Standards for Transport Category Airplanes-Flight Rules
> **Rule** · Final rule. · Published 2011-12-01 · Effective 2012-01-30 · 76 FR 74649
## Document
- **Document number:** 2011-30954
- **Category:** other
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 76 FR 74649
- **Publication date:** 2011-12-01
- **Effective date:** 2012-01-30
- **FAA docket:** Docket No. FAA-2010-0310
## Abstract

This rule amends the regulations governing various airworthiness standards for transport category airplanes. This action harmonizes the requirements for takeoff speeds, static lateral-directional stability, speed increase and recovery characteristics, and the stall warning margin for the landing configuration in icing conditions with the European Aviation Safety Agency (EASA) certification standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/12/01/2011-30954/harmonization-of-various-airworthiness-standards-for-transport-category-airplanes-flight-rules)
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