# Policy for 14 CFR 33.87, Endurance Test
**AGENCY:**
Federal Aviation Administration, DOT.
**ACTION:**
Notice of proposed policy statement; request for comments.
**SUMMARY:**
The Federal Aviation Administration (FAA) announces the availability of proposed policy for 14 CFR 33.87, endurance test. This proposed policy would revise the current policy to provide guidance for demonstrating a 2-minute gas temperature limit within the 5-minute time limit associated with the takeoff power or thrust rating.
**DATES:**
Comments must be received by April 30, 2003.
**ADDRESSES:**
Send all comments on the proposed policy to the individual identified under *FOR FURTHER INFORMATION CONTACT.*
**FOR FURTHER INFORMATION CONTACT:**
Karen Grant, FAA, Engine and Propeller Standards Staff, ANE-110, 12 New England Executive Park, Burlington, MA 01803; e-mail: *[email protected];* telephone; (781) 238-7119; fax: (781) 238-7199.
**SUPPLEMENTARY INFORMATION:**
**Comments Invited**
The proposed policy statement is available on the Internet at the following address: *http://www.airweb.faa.gov/rgl.* If you do not have access to the Internet, you may request a copy by contacting the individual listed under *FOR FURTHER INFORMATION CONTACT.* The FAA invites interested parties to comment on the proposed policy. Comments should identify the subject of the proposed policy and be submitted to the individual identified under *FOR FURTHER INFORMATION CONTACT.* The FAA will consider all comments received by the closing date before issuing the final policy.
**Background**
The proposed policy statement would supersede FAA policy number 2000-33.87-R2, issued April 21, 2000. The intent of this proposed policy is to establish a uniform approach for Aircraft Certification Offices (ACOs) to evaluate and approve a 2-minute gas temperature limit caused by thermal mismatch of engine hardware or flight conditions during acceleration to takeoff power. The FAA has revised this policy to provide guidance for demonstrating a 2-minute gas temperature limit within the 5-minute time limit associated with the takeoff power or thrust rating. The proposed policy would not establish new requirements.
(Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.)
Issued in Burlington, Massachusetts, on February 12, 2003.
Francis A. Favara,
Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service.