# Removal of Category IIIa, IIIb, and IIIc Definitions; Delay of Effective Date and Reopening of Comment Period
> **Rule** · Direct final rule; delay of effective date and reopening of comment period. · Published 2012-04-13 · Effective 2012-02-16 · 77 FR 22186
## Document
- **Document number:** 2012-8678
- **Category:** other
- **Type:** Rule
- **Action:** Direct final rule; delay of effective date and reopening of comment period.
- **Citation:** 77 FR 22186
- **Publication date:** 2012-04-13
- **Effective date:** 2012-02-16
- **FAA docket:** Docket No. FAA-2012-0019
## Abstract

This action delays the effective date and reopens the comment period for a Direct Final Rule that was published on February 16, 2012 (77 FR 9163). In that document, the FAA published amendments to remove the definitions of Category IIIa, IIIb, and IIIc operations because the definitions are outdated and no longer used for aircraft certification or operational authorization. The International Aviation Civil Organization (ICAO) has requested additional time to adequately analyze the Direct Final Rule and prepare comments.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2012/04/13/2012-8678/removal-of-category-iiia-iiib-and-iiic-definitions-delay-of-effective-date-and-reopening-of-comment)
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