# Proposed Revision: Technical Standard Order (TSO)—C128a, Equipment That Prevent Blocked Channels Used in Two-Way Radio Communications Due to Unintentional Transmission; Correction
**AGENCY:**
Federal Aviation Administration DOT.
**ACTION:**
Notice of availability and request for public comment; correction
**SUMMARY:**
The Federal Aviation Administration published a document in the *Federal Register* on June 3, 2005, concerning Technical Standard Order (TSO) C-128a, Equipment That Prevent Blocked Channels Used in Two-way Radio Communications Due to Unintentional Transmissions. The document contains an incorrect Internet address for the retrieval of the TSO.
**FOR FURTHER INFORMATION CONTACT:**
Mr. Thomas Mustach, AIR-130, Room 815, Federal Aviation Administration, Aircraft Certification Service, Aircraft Engineering Division, 800 Independence Avenue, SW., Washington, DC 20591. Telephone (425) 227-1935, FAX: (425) 227-1181. Or, via e-mail at: *[email protected].*
**Correction**
In the *Federal Register* of June 3, 2005, in FR Doc. 05-11115, on page 32699, in the third column, correct the Internet address listed under “How To Obtain Copies” to read:
**How To Obtain Copies**
You may get a copy of the proposed TSO from the Internet at: *http://www.airweb.gov/rgl.* See section entitled *For Further Information Contact* for the complete address if requesting a copy by mail. You may inspect the RTCA document at the FAA office location listed under *Addresses.* Note however, RTCA documents are copyrighted and may not be reproduced without the written consent of RTCA, Inc. You may purchase copies of RTCA, Inc. documents from: RTCA, Inc. 1828 L Street, NW., Suite 815, Washington, DC 20036, or directly from their Web site: *http://www.rtca.org/.*
**DATES:**
Submit comments on or before July 22, 2005.
Issued in Washington, DC, on June 13, 2005.
Susan J. M. Cabler,
Assistant Manager, Aircraft Engineering Division, Aircraft Certification Service.