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ZID handoff associate controller does not ensure radar controller has coordination control information to ZME controller causing loss of separation with 2 conflicting air carrier's.
| Attributes | |
| ACN | 458979 |
| Time | |
| Date | 199912 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pxv.vortac |
| State Reference | IN |
| Altitude | msl bound lower : 29000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc tracon : sct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Challenger CL604 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : level |
| Route In Use | arrival star : wlder |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | pilot : private |
| Experience | controller limited radar : 1 controller non radar : 1 controller radar : 8 controller time certified in position1 : 8 flight time total : 350 |
| ASRS Report | 458979 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera other controllerb other other : 3 |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 19000 vertical : 300 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure Operational Error |
Narrative:
Air carrier X was at FL330 landing cvg, southwest of pxv. Air carrier Y was at FL310 sbound over pxv to join wlder 4 arrival landing mem. My radar associate approved a 20 degree right turn and descent to FL290 on air carrier X. I (radar controller) was unaware of this coordination. I did not hear anything said about a turn and descent. Air carrier Y would not hand off to ZME and my radar associate was attempting to call ZME to initiate a radar handoff. About 2 mins later, conflict alert is activated between the 2 aircraft and I asked my radar associate 'what the hell is he doing?' referring to air carrier X. He stated that 'he is 20 degrees right and descending to FL290.' at this time air carrier X altitude readout is FL323 and the 2 min 'vector lines' crossed. I immediately called ZME and referred to this imminent situation to inform them about air carrier Y turning hard right, heading 270 degrees. My radar associate still had not completed the radar handoff. Radar handoff was accomplished after the hard turn to 270 degrees. Although air carrier Y was expedited in his turn, angle of confliction and lack of time made separation impossible.
Original NASA ASRS Text
Title: ZID HDOF ASSOCIATE CTLR DOES NOT ENSURE RADAR CTLR HAS COORD CTL INFO TO ZME CTLR CAUSING LOSS OF SEPARATION WITH 2 CONFLICTING ACR'S.
Narrative: ACR X WAS AT FL330 LNDG CVG, SW OF PXV. ACR Y WAS AT FL310 SBOUND OVER PXV TO JOIN WLDER 4 ARR LNDG MEM. MY RADAR ASSOCIATE APPROVED A 20 DEG R TURN AND DSCNT TO FL290 ON ACR X. I (RADAR CTLR) WAS UNAWARE OF THIS COORD. I DID NOT HEAR ANYTHING SAID ABOUT A TURN AND DSCNT. ACR Y WOULD NOT HAND OFF TO ZME AND MY RADAR ASSOCIATE WAS ATTEMPTING TO CALL ZME TO INITIATE A RADAR HDOF. ABOUT 2 MINS LATER, CONFLICT ALERT IS ACTIVATED BTWN THE 2 ACFT AND I ASKED MY RADAR ASSOCIATE 'WHAT THE HELL IS HE DOING?' REFERRING TO ACR X. HE STATED THAT 'HE IS 20 DEGS R AND DSNDING TO FL290.' AT THIS TIME ACR X ALT READOUT IS FL323 AND THE 2 MIN 'VECTOR LINES' CROSSED. I IMMEDIATELY CALLED ZME AND REFERRED TO THIS IMMINENT SIT TO INFORM THEM ABOUT ACR Y TURNING HARD R, HDG 270 DEGS. MY RADAR ASSOCIATE STILL HAD NOT COMPLETED THE RADAR HDOF. RADAR HDOF WAS ACCOMPLISHED AFTER THE HARD TURN TO 270 DEGS. ALTHOUGH ACR Y WAS EXPEDITED IN HIS TURN, ANGLE OF CONFLICTION AND LACK OF TIME MADE SEPARATION IMPOSSIBLE.
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.