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- W171649876 abstract "This report reviews the Airworthiness Standards for Certification of Helicopters for Instrument Flight Rules Operation. It specifically reviews the Interim Criteria, Federal Aviation Regulations, Advisory Circulars and other pertinent documents associated with the certification of Helicopters for Instrument Flight. A review of current technology, existing data applicable to IFR helicopter operation and certification procedures is accomplished. Identification of specific airworthiness requirements for helicopters operating in IFR conditions is studied and special attention is given to aircrew manning configurations, pilot flight-control workloads, helicopter trim, static stability, dynamic stability, handling qualities, analysis of time history data and documentation procedures, augmentation systems, autopilots and a review of certain flight test techniques. An analysis was made of the numerous helicopters recently certified for IFR flight in order to establish the various systems utilized including avionics systems, display systems and autopilot type systems. Special emphasis was centered on the study of the most critical IFR flight phases depicted by high workload cruise conditions and marginal stability conditions due aft c.g. conditions, descent, and high climb rate conditions during IFR approaches and missed approaches for Category I procedures. (Author)" @default.
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- W171649876 date "1979-02-01" @default.
- W171649876 modified "2023-09-27" @default.
- W171649876 title "REVIEW OF AIRWORTHINESS STANDARDS FOR CERTIFICATION OF HELICOPTERS FOR INSTRUMENT FLIGHT RULES (IFR) OPERATION" @default.
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