### 37733 Federal Register / Vol. 77, No. 121 / Friday, June 22, 2012 / Notices
telephone at (202) 833–9339, fax at (202) 833–9434, or Web site at http:// www.rtca.org

. **SUPPLEMENTARY INFORMATION :**  Pursuant to section 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92– 463, 5 U.S.C., App.), notice is hereby given for a meeting of Special Committee 224. The agenda will include the following: July 11, 2012

• Welcome, Introductions, and Administrative Remarks.

• Review/Approve Summary— Thirteenth Meeting.

• Updates from TSA (as required).

• Workgroup Reports.

• Industry Solicitation Progress Report.

• Time and Place of Next Meeting.

• Any Other Business.

• Adjourn. Attendance is open to the interested public but limited to space availability. With the approval of the chairman, members of the public may present oral statements at the meeting. Persons wishing to present statements or obtain information should contact the person listed in the **FOR FURTHER INFORMATION CONTACT**  section. Members of the public may present a written statement to the committee at any time. Issued in Washington, DC, on June 15, 2012. Kathy Hitt, Program Analyst, Business Operations Branch, Federal Aviation Administration. [FR Doc. 2012–15276 Filed 6–21–12; 8:45 am] **BILLING CODE 4910–13–P**

**DEPARTMENT OF TRANSPORTATION**
**Federal Aviation Administration Third Meeting: RTCA Special**  **Committee 226, Audio Systems and Equipment** 
**AGENCY :**  Federal Aviation Administration (FAA), U.S. Department of Transportation (DOT). **ACTION :**  Meeting Notice of RTCA Special Committee 226, Audio Systems and Equipment.

**SUMMARY :**  The FAA is issuing this notice to advise the public of the third meeting of RTCA Special Committee 226, Audio Systems and Equipment. **DATES :**  The meeting will be held July 10–12, 2012, from 9 a.m.–5 p.m. **ADDRESSES :**  The meeting will be held at RTCA, Inc., 1150 18th Street NW., Suite 910, Washington, DC 20036. **FOR FURTHER INFORMATION CONTACT :**  The RTCA Secretariat, 1150 18th Street NW., Suite 910, Washington, DC, 20036, or by telephone at (202) 833–9339, fax at (202) 833–9434, or Web site at http:// www.rtca.org. **SUPPLEMENTARY INFORMATION :**  Pursuant to section 10(a)(2) of the Federal Advisory Committee Act (Pub. L. 92– 463, 5 U.S.C., App.), notice is hereby given for a meeting of Special Committee 226. The agenda will include the following: July 10–12, 2012

• Welcome and Administrative Remarks.

• Introductions.

• Agenda Overview.

• Review previous action items.

• Assess work required and timelines for conclusion of committee work.

• Solicit proposals for further changes to DO–214.

• Continue discussion on the following:

• Risks of usage of adaptive technology during test.

• Discuss results of proposed committee letter(s) to invite additional. headsets, MIC’s and CVR manufacturers.

• Addition of noise test requirement to the vibration test variable nature of Oxygen Mask.

• Microphone and Hand Microphone performance in the marketplace.

• Re-examine proposal to remove CVR Area Microphone requirements from standard in lieu of ED–112.

• FAA info letter addressing use of Active Noise Reduction (ANR) and Powered ANR headsets to discuss concern of EMI, EMC effects on power leads affecting communications.

• Sensitivity versus output power as they correlate with its specified ratings.

• Continue review of DO–214 and draft updates/changes.

• Review draft language for noise test requirement to combine with the vibration test.

• Other Business.

• Establish agenda for next meeting.

• Adjourn. Attendance is open to the interested public but limited to space availability. With the approval of the chairman, members of the public may present oral statements at the meeting. Persons wishing to present statements or obtain information should contact the person listed in the **FOR FURTHER INFORMATION CONTACT**  section. Members of the public may present a written statement to the committee at any time. Issued in Washington, DC, on June 15, 2012. Kathy Hitt, Program Analyst, Business Operations Branch, Federal Aviation Administration. [FR Doc. 2012–15277 Filed 6–21–12; 8:45 am] **BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION** 
**Federal Aviation Administration Technical Standard Order (TSO)-C68a,**  **Airborne Automatic Dead Reckoning Computer Equipment Utilizing Aircraft**  **Heading and Doppler Ground Speed and Drift Angle Data (for Air Carrier**  **Aircraft)**
**AGENCY :**  Federal Aviation Administration (FAA), DOT. **ACTION :**  Notice of intent to cancel Technical Standard Order (TSO)-C68a, Airborne automatic dead reckoning computer equipment utilizing aircraft heading and Doppler ground speed and drift angle data (for air carrier aircraft).
**SUMMARY :**  This notice announces the FAA’s intent to cancel TSO-C68a, Airborne automatic dead reckoning computer equipment utilizing aircraft heading and Doppler ground speed and drift angle data. The effect of the cancelled TSO–68a will result in no new TSO-C68a design or production approvals. **DATES :**  Comments must be received on or before July 23, 2012. **FOR FURTHER INFORMATION CONTACT :**  Mr. Albert Sayadian, AIR–130, Federal Aviation Administration, 470 L’Enfant Plaza, Suite 4102, Washington, DC 20024. Telephone (202) 385–4652, fax (202) 385–4651, email to: albert.sayadian@faa.gov. **SUPPLEMENTARY INFORMATION :**  Comments Invited

You are invited to comment on the cancellation of the TSO-C68a by submitting written data, views, or arguments to the above address. Comments received may be examined, both before and after the closing date at the above address, weekdays except Federal holidays, between 8:30 a.m. and 4:30 p.m. The Director, Aircraft Certification Service, will consider all comments received on or before the closing date. Background

Doppler radar is a semiautomatic selfcontained dead reckoning navigation system (radar sensor plus computer) which is not continuously dependent on information derived from ground based or external aids. The system employs radar signals to detect and measure ground speed and drift angle, using the aircraft compass system as its directional reference. Doppler is less accurate than Inertial Navigation System (INS), however, and the use of an external reference is required for periodic updates if acceptable position