# Advisory Circular 33.63-1, Turbine Engine Vibration
**AGENCY:**
Federal Aviation Administration (FAA), DOT.
**ACTION:**
Notice of issuance of advisory circular.
**SUMMARY:**
This notice announces the issuance of Advisory Circular (AC) 33.63-1, Turbine Engine Vibration. This advisory circular (AC) provides guidance and acceptable methods, but not the only methods, that may be used to demonstrate compliance with the vibration requirements of § 33.63 of Title 14 of the Code of Federal Regulations (14 CFR part 33).
**DATES:**
The Engine and Propeller Directorate issued AC 33.63-1 on July 25, 2007.
**FOR FURTHER INFORMATION CONTACT:**
The Federal Aviation Administration, Attn: Dorina Mihail, Engine and Propeller Standards Staff, ANE-110, 12 New England Executive Park, Burlington, MA 01803-5299; telephone: (781) 238-7153; fax: (781) 238-7199; e-mail: *[email protected]* .
We have filed in the docket all substantive comments received, and a report summarizing them. If you wish to review the docket in person, you may go to the above address between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. If you wish to contact the above individual directly, you can use the above telephone number or e-mail address provided.
*How to obtain copies:* A paper copy of AC 33.63-1 may be obtained by writing to the U.S. Department of Transportation, Subsequent Distribution Office, DOT Warehouse, SVC-121.23, Ardmore East Business Center, 3341 Q 75th Ave., Landover, MD 20785, telephone 301-322-5377, or by faxing your request to the warehouse at 301-386-5394. The AC will also be available on the Internet at *http://www.faa.gov/regulations_policies* (then click on “Advisory Circulars”).
(Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.)
Issued in Burlington, Massachusetts on July 25, 2007.
Peter A. White,
Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service.