| Title | CDI Sensitivity and Crosstrack Error on Nonprecision Approaches |
|---|---|
| Record ID | 33415 |
| Personal Name Creator |
Huntley, M. Stephen, Jr.; Rourke, C.J.; Disario, Robert |
| Source | 48p. in various pagings |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Publisher | United States. Department of Transportation. Federal Aviation Administration |
| Publication Date | 19910100 |
| Language | English |
| 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. |
| Rosap ID | dot:8625 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/8625 |
| TRT Terms | Instrument landing systems; Air pilots; Error analysis |
| General Subjects | LORAN-C; Flight Technical Error; Instrument Approaches; Pilot Performance |
| Classification | NTL - SAFETY AND SECURITY - SAFETY AND SECURITY; NTL - SAFETY AND SECURITY - Human Factors |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
578879 |
| Contract Number | FA1E2/A1070 |
| Report Number | DOT-VNTSC-FAA-91-2 |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/33000/33400/33415/33415.pdf |
| Format | |
| Database | NTL Digital Repository |