Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. All approved incorporation by reference (IBR) material is available for inspection at the FAA and at the National Archives and Records Administration (NARA). Contact the FAA's Office of Rulemaking, 800 Independence Avenue SW, Washington, DC 20590; phone: (202) 267-9677. For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations.html or email [email protected]. The material may be obtained from the sources in the following paragraphs:

(a) RTCA, Inc., 1150 18th St. NW, Suite 910, Washington, DC 20036; phone: (202) 833-9339; website: www.rtca.org/products.

(1) Section 2 of RTCA DO-309, Minimum Operational Performance Standards (MOPS) for Helicopter Terrain Awareness and Warning System (HTAWS) Airborne Equipment (Mar. 13, 2008); into §§ 194.302; 194.306.

(2) [Reserved]

(b) U.S. Department of Transportation, Subsequent Distribution Office, DOT Warehouse M30, Ardmore East Business Center, 3341 Q 75th Avenue, Landover, MD 20785; phone (301) 322-5377; website: www.faa.gov/aircraft/air_cert/design_approvals/tso/ (select the link “Search Technical Standard Orders”).

(1) TSO-C194, Technical Standard Order: Helicopter Terrain Awareness and Warning System, effective Dec. 17, 2008; into §§ 194.302; 194.306.

(2) [Reserved]