42278 Federal Register / Vol
42278 Federal Register / Vol. 65, No. 132 / Monday, July 10, 2000 / Rules and Regulations shipments; and (5) this rule provides a FOR FURTHER INFORMATION CONTACT: Jay materials introduce fatigue 60-day comment period, and any Turnberg, FAA, Engine and Propeller characteristics and failure modes that comments received will be considered Standards Staff, Engine and Propeller differ from metallic materials. prior to finalization of this rule. Directorate, Aircraft Certification The requirements of part 35 were Service, ANE±110, 12 New England established to address the airworthiness List of Subjects in 7 CFR Part 947 Executive Park, Burlington, considerations associated with metal Marketing agreements, Potatoes, Massachusetts, 01803±5229; telephone propeller blades. Propeller blades Reporting and recordkeeping (781) 238±7116; fax (781) 238±7199. constructed using composite material requirements. SUPPLEMENTARY INFORMATION: may be subject to damage due to the For the reasons set forth in the high impact forces associated with a preamble, 7 CFR Part 947 is amended as Background bird strike. Thus, composite propellers follows: On February 9, 1999, Hamilton must demonstrate propeller integrity Sundstrand applied for type following a bird strike. PART 947ÐIRISH POTATOES GROWN certification for a new model NP2000 Part 35 does not require a IN MODOC AND SISKIYOU COUNTIES, propeller. The NP2000 propeller uses a demonstration of propeller integrity CALIFORNIA, AND IN ALL COUNTIES digital electro-hydraulic control system following a lightning strike. Composite IN OREGON, EXCEPT MALHEUR and blades that are constructed of blades may not safely conduct or COUNTY composite material. dissipate the electrical current from a Conventional propellers on turboprop lightning strike. Severe damage can 1.
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