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ZID controller approves descent clearance to another ZID controller without first scanning for traffic and becomes involved in an operational error.
| Attributes | |
| ACN | 472012 |
| Time | |
| Date | 200005 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | intersection : yocky |
| State Reference | KY |
| Altitude | msl bound lower : 29000 msl bound upper : 30300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc tower : aus.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 2 controller radar : 10 controller time certified in position1 : 10 |
| ASRS Report | 472012 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 19200 vertical : 800 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I had just assumed the falmouth high radar sector. At the exact moment that the relief briefing ended, the sector south of me requested aircraft #1 descending from FL310 to FL280. Without scanning for traffic, I complied with the request. I then sat down and proceeded to adjust the sector environment to my personal preferences. Conflict alert brought my attention back to the scope. Aircraft #1 was through FL303 for FL280 with aircraft #2 opposite direction at FL290. Using turns, I unsuccessfully tried to re-establish standard separation. In my opinion, the primary cause of the error was my misplaced priorities. I was adjusting the sector and trying to comply with the next sector's request instead of scanning and talking mental 'ownership' of the aircraft in my sector. I plan to change my work habits for the first 5-10 mins of a session so that this will not reoccur.
Original NASA ASRS Text
Title: ZID CTLR APPROVES DSCNT CLRNC TO ANOTHER ZID CTLR WITHOUT FIRST SCANNING FOR TFC AND BECOMES INVOLVED IN AN OPERROR.
Narrative: I HAD JUST ASSUMED THE FALMOUTH HIGH RADAR SECTOR. AT THE EXACT MOMENT THAT THE RELIEF BRIEFING ENDED, THE SECTOR S OF ME REQUESTED ACFT #1 DSNDING FROM FL310 TO FL280. WITHOUT SCANNING FOR TFC, I COMPLIED WITH THE REQUEST. I THEN SAT DOWN AND PROCEEDED TO ADJUST THE SECTOR ENVIRONMENT TO MY PERSONAL PREFERENCES. CONFLICT ALERT BROUGHT MY ATTN BACK TO THE SCOPE. ACFT #1 WAS THROUGH FL303 FOR FL280 WITH ACFT #2 OPPOSITE DIRECTION AT FL290. USING TURNS, I UNSUCCESSFULLY TRIED TO RE-ESTABLISH STANDARD SEPARATION. IN MY OPINION, THE PRIMARY CAUSE OF THE ERROR WAS MY MISPLACED PRIORITIES. I WAS ADJUSTING THE SECTOR AND TRYING TO COMPLY WITH THE NEXT SECTOR'S REQUEST INSTEAD OF SCANNING AND TALKING MENTAL 'OWNERSHIP' OF THE ACFT IN MY SECTOR. I PLAN TO CHANGE MY WORK HABITS FOR THE FIRST 5-10 MINS OF A SESSION SO THAT THIS WILL NOT REOCCUR.
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.