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Aircraft target datablock not displayed after handoff during climb from 8000 ft until reaching 17500 ft. Reporter said this not the first time for an aircraft has disappeared.
| Attributes | |
| ACN | 345720 |
| Time | |
| Date | 199608 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : dkk |
| State Reference | NY |
| Altitude | msl bound lower : 8000 msl bound upper : 17500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : czyz |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : czyz enroute airway : zob |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar pilot : instrument |
| Experience | controller radar : 10 flight time total : 3000 |
| ASRS Report | 345720 |
| Person 2 | |
| Affiliation | government other |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Navigational Facility |
| Air Traffic Incident | other |
Narrative:
On aug/tue/96, I was working the radar position at the dunkirk sector at ZOB. I took a manual handoff from toronto center on air carrier X as the aircraft was leaving 8000 ft. When the aircraft checked on the frequency I could not see the code or datablock. I called toronto center to see if they could see a target. They responded that they could and told me that the aircraft was leaving 13500 ft! It was not until the aircraft reached thorl intersection and 17500 ft that I could see the target and then start a track. This is not the first time that aircraft have disappeared into this 'black hole.'
Original NASA ASRS Text
Title: ACFT TARGET DATABLOCK NOT DISPLAYED AFTER HDOF DURING CLB FROM 8000 FT UNTIL REACHING 17500 FT. RPTR SAID THIS NOT THE FIRST TIME FOR AN ACFT HAS DISAPPEARED.
Narrative: ON AUG/TUE/96, I WAS WORKING THE RADAR POS AT THE DUNKIRK SECTOR AT ZOB. I TOOK A MANUAL HDOF FROM TORONTO CTR ON ACR X AS THE ACFT WAS LEAVING 8000 FT. WHEN THE ACFT CHKED ON THE FREQ I COULD NOT SEE THE CODE OR DATABLOCK. I CALLED TORONTO CTR TO SEE IF THEY COULD SEE A TARGET. THEY RESPONDED THAT THEY COULD AND TOLD ME THAT THE ACFT WAS LEAVING 13500 FT! IT WAS NOT UNTIL THE ACFT REACHED THORL INTXN AND 17500 FT THAT I COULD SEE THE TARGET AND THEN START A TRACK. THIS IS NOT THE FIRST TIME THAT ACFT HAVE DISAPPEARED INTO THIS 'BLACK HOLE.'
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.