# Proposed Advisory Circular; Turbine Rotor Strength Requirements
**AGENCY:**
Federal Aviation Administration, DOT.
**ACTION:**
Notice of availability of proposed advisory circular and request for comments.
**SUMMARY:**
The Federal Aviation Administration (FAA) announces the availability of proposed advisory circular (AC) Number 33.27-1, Turbine Rotor Strength Requirements of 14 CFR 33.27.
**DATES:**
Comments must be received on or before August 1, 2003.
**ADDRESSES:**
Send all comments on the proposed AC to the Federal Aviation Administration, Attn: Tim Mouzakis, Engine and Propeller Standards Staff, ANE-110, 12 New England Executive Park, Burlington, MA 01803-5299.
**FOR FURTHER INFORMATION CONTACT:**
Tim Mouzakis, Engine and Propeller Standards Staff, ANE-110, at the above address; telephone: (781) 238-7114; fax: (781) 238-7199; e-mail: *[email protected].*
**SUPPLEMENTARY INFORMATION:**
**Comments Invited**
A copy of the subject AC may be obtained by contacting the person named under *FOR FURTHER INFORMATION CONTACT* or by donwloading the proposed AC from the following Internet Web site: *http://www.airweb.faa.gov/rgl.* The FAA invites interested parties to comment on the proposed AC. Comments should identify the subject of the AC and be submitted to the individual identified under *FOR FURTHER INFORMATION CONTACT* . The FAA will consider all communications received by the closing date before issuing the final AC.
**Background**
This AC provides guidance and acceptable methods, but not the only methods, for demonstrating compliance with the rotor strength (overspeed) requirements of § 33.27 of title 14 of the Code of Federal Regulations (14 CFR 33.27).
(Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.)
Issued in Burlington, Massachusetts, on June 11, 2003.
Peter A. White,
Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service.