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TransDigm Group Incorporated The Tower at Erieview 1301 East 9th St. Suite 3710 Cleveland, OH 44114 216.706.2960 info@transdigm.com         Shareholder Information Transfer Agent & Registrar Computershare P.O. Box 43078 Providence, RI 02940 800.622.6757 Website: www.computershare.com/investor Shareholder Inquiries Information related to share certificates should be directed to the transfer agent. For other inquiries, contact: Investor Relations TransDigm Group Incorporated The Tower at Erieview 1301 East 9th St. Suite 3710 Cleveland, OH 44114 216.706.2945 Email: ir@TransDigm.com Independent Auditors Ernst & Young LLP 1300 Huntington Building 925 Euclid Avenue Cleveland, OH 44115 216.861.5000 www.ey.com       Corporate Profile Corporate Governance Board and Management Shareholder Information Stock Information News Releases SEC Filings Analysts Event Calendar Presentations E-mail Alerts Investor FAQ Contact Information Financial Reports Fact Sheet       TDG (common) EXCHANGE NYSE (US Dollar) PRICE $61.42 CHANGE (%)  + 0.17 (0.28%) VOLUME 496,544 Data as of 09/03/10 4:03 p.m. ET Minimum 20 minute delay        PROXY STATEMENT for  2010 ANNUAL MEETING  2009 ANNUAL REPORT        NEWS 09.03.10 TransDigm Completes Acquisition of Semco Instruments Inc. Read More