# Advisory Circular 33-7A, Guidance for 30-Second and 2-Minute One-Engine-Inoperative (OEI) Ratings for Rotorcraft Turbine Engines
**AGENCY:**
Federal Aviation Administration (FAA), DOT.
**ACTION:**
Notice of issuance of advisory circular.
**SUMMARY:**
This notice announces the issuance of Advisory Circular (AC) 33-7A, Guidance for 30-Second and 2-Minute One-Engine-Inoperative (OEI) Ratings for Rotorcraft Turbine Engines. This AC provides guidance and acceptable means, but not the only means, for demonstrating compliance with the specific requirements applicable to 30-second and 2-minute OEI rotorcraft turbine engine ratings in part 33 of Title 14 of the Code of Federal Regulations (14 CFR part 33).
**DATES:**
The Engine and Propeller Directorate issued AC 33-7A on June 11, 2009.
**FOR FURTHER INFORMATION CONTACT:**
The Federal Aviation Administration, Attn: Donna Mihail, Engine and Propeller Standards Staff, ANE-111, 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 33-7A may be obtained by writing to the U.S. Department of Transportation, Subsequent Distribution Office, DOT Warehouse, SVC-121.23, Ardmore East Business Center, 3341Q 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 June 11, 2009.
Peter A. White,
Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service.