Removal of Category IIIa, IIIb, and IIIc Definitions; Confirmation of Effective Date and Response to Public Comments

This action confirms the effective date of the direct final rule published on February 16, 2012 (77 FR 9163), and responds to the comments received on that direct final rule. In that document, the FAA proposed to remove the definitions of Category IIIa, IIIb, and IIIc operations because the definitions are outdated and no longer used for aircraft certification or operational authorization.

Agency Contact: For technical questions concerning this action, contact Bryant Welch, Flight Technologies and Procedures Division, Flight Operations Branch, AFS-410, Federal Aviation Administration, 470 L'Enfant Plaza, Suite 4102, Washington, DC 20024; telephone (202) 385-4539; email bryant.welch@faa.gov.