CDI Sensitivity and Crosstrack Error on Nonprecision Approaches

Details

• Creators:
  Huntley, M. Stephen, Jr. ; Rourke, C.J. ; Disario, Robert
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.)
• Subject/TRT Terms:
  • Instrument landing systems
  • Air pilots
  • Error analysis
  • LORAN-C
  • Flight Technical Error
  • Instrument Approaches
  • Pilot Performance
• Publication/ Report Number:
  DOT-VNTSC-FAA-91-2
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report June 1988 - June 1990
• Corporate Publisher:
  United States. Department of Transportation. Federal Aviation Administration
• Abstract:
  This study was conducted to determine the influence of course deviation ; indicator (CDI) sensitivity on pilot tracking error during nonprecision approaches. ; Twelve pilots flew an instrumented single-engine airplane on 144 approaches at six ; different levels of CDI sensitivity. The sensitivities ranged from 15,190 feet ; (2.5 nautical miles) to 475 feet (0.08 nautical miles) for a full-scale deflection. ; Increases in sensitivity of this magnitude decreased crosstrack Root Mean Square ; (RMS) error from an average of 0.22 to 0.04 nautical miles. Magnitude of the ; error and the influence of sensitivity on that magnitude were affected by distance ; from the missed approach point. Pilots reported that increases in sensitivity ; increased their workload and changed their distribution of attention among the ; aircraft instruments used for navigation and directional control.
  More +
• Format:
  PDF
• Funding:
  FA1E2/A1070
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/8625/dot_8625_DS1.pdf
• File Type:
  [PDF - 1.73 MB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha-512:8a6ddf3b020feca2e097c1507a07300f7ac7a8a5bedb45b11b432a3b9aa050fece435eaa9dfd296765585be61d5945db4c57a281c4ccf54fc31dd8d24f5e7cb3