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ZID controller experienced operational error at FL340 as climb clearance was issued through occupied altitude with limited data block aircraft.
| Attributes | |
| ACN | 687352 |
| Time | |
| Date | 200602 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : vhp.vortac |
| State Reference | IN |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 21 controller time certified in position2 : 5 |
| ASRS Report | 687352 |
| Person 2 | |
| Affiliation | government : faa |
| Function | other personnel other |
| Qualification | controller : radar |
| Experience | controller time certified in position1 : 35 |
| ASRS Report | 686756 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 21600 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working aircraft #2. Aircraft #1 was handed off to another facility and the data block dropped off of my scope (timed out). I noticed aircraft #2 climbing into aircraft #1 (limited data block -- beacon and altitude only) but it was too late to take action. I notified my supervisor. Supplemental information from acn 686756: controller climbed sbound aircraft X under wbound aircraft Y. Aircraft Y had been a pointout whose full data block had disappeared because it timed out.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT FL340 AS CLB CLRNC WAS ISSUED THROUGH OCCUPIED ALT WITH LIMITED DATA BLOCK ACFT.
Narrative: I WAS WORKING ACFT #2. ACFT #1 WAS HANDED OFF TO ANOTHER FACILITY AND THE DATA BLOCK DROPPED OFF OF MY SCOPE (TIMED OUT). I NOTICED ACFT #2 CLBING INTO ACFT #1 (LIMITED DATA BLOCK -- BEACON AND ALT ONLY) BUT IT WAS TOO LATE TO TAKE ACTION. I NOTIFIED MY SUPVR. SUPPLEMENTAL INFO FROM ACN 686756: CTLR CLBED SBOUND ACFT X UNDER WBOUND ACFT Y. ACFT Y HAD BEEN A POINTOUT WHOSE FULL DATA BLOCK HAD DISAPPEARED BECAUSE IT TIMED OUT.
Data retrieved from NASA's ASRS site as of January 2009 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.