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Computer tracking problem causes data block to drop on 1 aircraft, then reacquire as another aircraft.
| Attributes | |
| ACN | 259801 |
| Time | |
| Date | 199312 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : pie airport : tpa |
| State Reference | FL |
| Altitude | msl bound lower : 7000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller radar : 8 controller supervisory : 2 |
| ASRS Report | 259801 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial |
| 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:
Air carrier X departed pie airport northbound to tay, ZJX airspace. Approximately 10 mi north of pie, the automatic-acquire full data block went into coast status, and the target reacquired with a full data block of air carrier Y. I was not working air carrier Y, nor did I know who air carrier Y was. Approximately 10 mins later, I got a call from cdk jax sector with a manual handoff on air carrier Y, a clamp arrival to srq. The 2 aircraft flight progress strips indicated different beacon codes. At the time it occurred I was moderately to very busy and desperately needed altitude information on air carrier X due to crossing traffic situation. Safety was definitely compromised.
Original NASA ASRS Text
Title: COMPUTER TRACKING PROB CAUSES DATA BLOCK TO DROP ON 1 ACFT, THEN REACQUIRE AS ANOTHER ACFT.
Narrative: ACR X DEPARTED PIE ARPT NBOUND TO TAY, ZJX AIRSPACE. APPROX 10 MI N OF PIE, THE AUTO-ACQUIRE FULL DATA BLOCK WENT INTO COAST STATUS, AND THE TARGET REACQUIRED WITH A FULL DATA BLOCK OF ACR Y. I WAS NOT WORKING ACR Y, NOR DID I KNOW WHO ACR Y WAS. APPROX 10 MINS LATER, I GOT A CALL FROM CDK JAX SECTOR WITH A MANUAL HDOF ON ACR Y, A CLAMP ARR TO SRQ. THE 2 ACFT FLT PROGRESS STRIPS INDICATED DIFFERENT BEACON CODES. AT THE TIME IT OCCURRED I WAS MODERATELY TO VERY BUSY AND DESPERATELY NEEDED ALT INFO ON ACR X DUE TO XING TFC SIT. SAFETY WAS DEFINITELY COMPROMISED.
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.