[Federal Register Volume 74, Number 175 (Friday, September 11, 2009)] [Notices] [Page 46831] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: E9-21953] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration Notice of Availability of Draft Technical Standard Order (TSO)- C166b for Extended Squitter Automatic Dependent Surveillance-Broadcast and Traffic Information Service-Broadcast Equipment Operating on the Radio Frequency of 1090 Megahertz (MHz) AGENCY: Federal Aviation Administration (FAA), Department of Transportation. ACTION: Notice of availability and request for comment. ----------------------------------------------------------------------- SUMMARY: The FAA is announcing the availability of and requesting comment on proposed TSO-C166b. The Avionic Systems Branch of the Aircraft Engineering Division, Aircraft Certification Service, FAA has presented a proposed revision of existing TSO-C166a. RTCA, Inc. Special Committee (SC)-186 is revising RTCA Document DO-260A, Minimum Operational Performance Standards for 1090 MHz Extended Squitter Automatic Dependent Surveillance-Broadcast (ADS-B) and Traffic Information-Broadcast (TIS-B), which will become the Minimum Performance Standard (MPS) for the proposed TSO-166b. Proposed TSO- C166b can be found at http://www.faa.gov/aircraft/draft_docs/. Comments may be filed electronically following instructions on the webpage. Comments may also be filed using the addresses provided below. DATES: Comments must be received no later than October 9, 2009. ADDRESSES: Comments may be submitted by the above deadline to Mr. Chip Bulger, AIR-130, Orville Wright Bldg. (FOB10A), 800 Independence Avenue, SW., Washington, DC 20591; facsimile: 202-385-4651. FOR FURTHER INFORMATION CONTACT: Mr. Chip Bulger, Avionics Systems Branch, Aircraft Engineering Division, Aircraft Certification Service, Federal Aviation Administration, 470 L'Enfant Plaza, SW., Washington, DC 20591; telephone 202-385-4882; chip.bulger@faa.gov. Issued in Washington, DC on September 8, 2009. David W. Hempe, Manager, Aircraft Engineering Division. [FR Doc. E9-21953 Filed 9-10-09; 8:45 am] BILLING CODE 4910-13-P