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Radar controller complains about poor radar coverage from adjacent facility and not being able to identify an IFR small aircraft.
| Attributes | |
| ACN | 238509 |
| Time | |
| Date | 199304 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cos |
| State Reference | CO |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Retractable Gear |
| Flight Phase | cruise other |
| Route In Use | enroute airway : cos |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 7 |
| ASRS Report | 238509 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
| Situations | |
| Navigational Aid | Unspecified |
Narrative:
A single engine small aircraft X IFR from the denver area to cos on V83 at 10000 ft MSL was 25 mi nne of cos airport. Tower/en route control between den and cos is standard operating practice. Den TRACON lost radar contact with the small aircraft before I could radar identify the aircraft. This is a routine problem and is probably due to the location of the cos radar antenna. There are several areas within cos airspace where radar coverage is inadequate. VHF and UHF radio communication is also marginal in these areas.
Original NASA ASRS Text
Title: RADAR CTLR COMPLAINS ABOUT POOR RADAR COVERAGE FROM ADJACENT FACILITY AND NOT BEING ABLE TO IDENT AN IFR SMA.
Narrative: A SINGLE ENG SMA X IFR FROM THE DENVER AREA TO COS ON V83 AT 10000 FT MSL WAS 25 MI NNE OF COS ARPT. TWR/ENRTE CTL BTWN DEN AND COS IS STANDARD OPERATING PRACTICE. DEN TRACON LOST RADAR CONTACT WITH THE SMA BEFORE I COULD RADAR IDENT THE ACFT. THIS IS A ROUTINE PROB AND IS PROBABLY DUE TO THE LOCATION OF THE COS RADAR ANTENNA. THERE ARE SEVERAL AREAS WITHIN COS AIRSPACE WHERE RADAR COVERAGE IS INADEQUATE. VHF AND UHF RADIO COM IS ALSO MARGINAL IN THESE AREAS.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.