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D10 controller described operational error at 3500 ft when assisting fellow controller with coordination effort and failing to hear clearance that resulting in error.
| Attributes | |
| ACN | 778284 |
| Time | |
| Date | 200803 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw.airport |
| State Reference | TX |
| Altitude | msl single value : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d10.tracon tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : d10.tracon |
| Make Model Name | Super King Air 200 HDC |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 21 controller time certified in position1 : 13 |
| ASRS Report | 778284 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert flight crew : took evasive action |
| Miss Distance | horizontal : 12000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While working the arrival 5 (AR5) position; I descended a B737 on the localizer for runway 13R to 3000 ft. The meacham north controller had a king air nwbound at 3000 ft which would have put the BE20 behind the B737. The meacham north controller was trying to accomplish a manual handoff to ZFW frisco sector. The frisco sector was not answering the landline so I was trying to help the meacham north controller out by looking up the dial code for the frisco sector; and did not hear the meacham north controller turn the BE20 nebound. I noticed the error occurring and tried to stop the B737 at 4000 ft; but they did not answer or they said say again I cannot recall. Many controllers in this facility have been working 6 day weeks as I have; due to the accelerated retirements of controllers and are becoming fatigued; and I believe that fatigue contributed to this operational error.
Original NASA ASRS Text
Title: D10 CTLR DESCRIBED OPERROR AT 3500 FT WHEN ASSISTING FELLOW CTLR WITH COORD EFFORT AND FAILING TO HEAR CLRNC THAT RESULTING IN ERROR.
Narrative: WHILE WORKING THE ARR 5 (AR5) POS; I DSNDED A B737 ON THE LOC FOR RWY 13R TO 3000 FT. THE MEACHAM N CTLR HAD A KING AIR NWBOUND AT 3000 FT WHICH WOULD HAVE PUT THE BE20 BEHIND THE B737. THE MEACHAM N CTLR WAS TRYING TO ACCOMPLISH A MANUAL HDOF TO ZFW FRISCO SECTOR. THE FRISCO SECTOR WAS NOT ANSWERING THE LANDLINE SO I WAS TRYING TO HELP THE MEACHAM N CTLR OUT BY LOOKING UP THE DIAL CODE FOR THE FRISCO SECTOR; AND DID NOT HEAR THE MEACHAM N CTLR TURN THE BE20 NEBOUND. I NOTICED THE ERROR OCCURRING AND TRIED TO STOP THE B737 AT 4000 FT; BUT THEY DID NOT ANSWER OR THEY SAID SAY AGAIN I CANNOT RECALL. MANY CTLRS IN THIS FACILITY HAVE BEEN WORKING 6 DAY WKS AS I HAVE; DUE TO THE ACCELERATED RETIREMENTS OF CTLRS AND ARE BECOMING FATIGUED; AND I BELIEVE THAT FATIGUE CONTRIBUTED TO THIS OPERROR.
Data retrieved from NASA's ASRS site as of May 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.