 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An ord controller described a false asde-X alert during multiple runway operations.
| Attributes | |
| ACN | 940553 |
| Time | |
| Date | 201103 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ORD.Airport |
| State Reference | IL |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Route In Use | None |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | Landing |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Local |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types |
Narrative:
I was working the 3rd local position; departing runway 32L. Traffic was landing on runway 9R. I put the erj into position on runway 32L at T10 intersection waiting for the aircraft on the 9R final to pass through the departure corridor before I cleared the erj for takeoff. I was watching the 9R arrival and cleared the erj for takeoff when the 9R arrival passed through the departure corridor. As the erj began his take off roll; the asde-X alerted; 'warning; runway 32L occupied.' I then looked at the asde-X display and saw that the erj and the 9R arrival were now red indicating that the 9R arrival was on runway 32L; however the 9R arriving aircraft's asde-X tag was east of runway 32L. I confirmed this by looking out the window and visually saw the 9R arrival short final for runway 9R; well east of the 32L departure corridor. The asde-X alerted when there was no conflict.
Original NASA ASRS Text
Title: An ORD Controller described a false ASDE-X alert during multiple runway operations.
Narrative: I was working the 3rd Local position; departing Runway 32L. Traffic was landing on Runway 9R. I put the ERJ into position on Runway 32L at T10 Intersection waiting for the aircraft on the 9R final to pass through the departure corridor before I cleared the ERJ for takeoff. I was watching the 9R arrival and cleared the ERJ for takeoff when the 9R arrival passed through the departure corridor. As the ERJ began his take off roll; the ASDE-X alerted; 'Warning; Runway 32L occupied.' I then looked at the ASDE-X display and saw that the ERJ and the 9R arrival were now red indicating that the 9R arrival was on Runway 32L; however the 9R arriving aircraft's ASDE-X tag was east of Runway 32L. I confirmed this by looking out the window and visually saw the 9R arrival short final for Runway 9R; well east of the 32L departure corridor. The ASDE-X alerted when there was no conflict.
Data retrieved from NASA's ASRS site as of April 2012 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.