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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ARTCC mfd radar controller accepts handoff on a B737 from bsv control sector climbing, restr to FL260. Hop controller attempts to point out an DA10 descending to mfd controller. Mfd controller instructs the bsv controller to continue climb to requested final altitude and xfer communication. Also, the mfd controller declines a point out of the DA10, takes a handoff and control of the descending DA10 from the hop controller, and becomes distracted. When the confliction materializes, the mfd controller attempts to maintain separation, but is unable.
| Attributes | |
| ACN | 411840 |
| Time | |
| Date | 199808 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : bsv |
| State Reference | OH |
| Altitude | msl bound lower : 19000 msl bound upper : 19000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| 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 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 15 |
| ASRS Report | 411840 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 6 flight time total : 80 |
| ASRS Report | 411841 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance none taken : insufficient time other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 27600 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Bsv controller pointed out aircraft #1 to mfd radar controller. Mfd controller took radar on aircraft #1 and was put on the mfd frequency. Hop was flashing the handoff on aircraft #2 landing osu. I asked hop for control for lower altitude on aircraft #2. Supplemental information from acn 411841: an DA10 from eri to osu at FL220 and a B737A from pit to mdw climbing to FL260. Controller in the previous sector pointed B737 out to me. I said no, keep him climbing, I'll talk to him here. My d-side got the DA10 control to descend from the previous sector. I descended DA10 to FL180 (I had traffic lower). I told the B737 to keep climbing. I was very busy at the time with cle arrs over mfd and ape, en route traffic, cle arrs here and coming. When I looked back I realized that the climb-descent ratio wasn't going to work. I asked for reports and turned the DA10 left, separation was lost at 700 ft and 4.7 mi. What I probably should have done was stop the B737 at FL210 and waited until they cleared and then descended DA10. I decided to descend DA10 because he was on arrival and I had to get him below other arrs inbound to cle. The correct approach would have been, DA10 at FL220, B737 at FL210 and if I had to spin DA10 to get him down, that would have been best.
Original NASA ASRS Text
Title: ARTCC MFD RADAR CTLR ACCEPTS HDOF ON A B737 FROM BSV CTL SECTOR CLBING, RESTR TO FL260. HOP CTLR ATTEMPTS TO POINT OUT AN DA10 DSNDING TO MFD CTLR. MFD CTLR INSTRUCTS THE BSV CTLR TO CONTINUE CLB TO REQUESTED FINAL ALT AND XFER COM. ALSO, THE MFD CTLR DECLINES A POINT OUT OF THE DA10, TAKES A HDOF AND CTL OF THE DSNDING DA10 FROM THE HOP CTLR, AND BECOMES DISTRACTED. WHEN THE CONFLICTION MATERIALIZES, THE MFD CTLR ATTEMPTS TO MAINTAIN SEPARATION, BUT IS UNABLE.
Narrative: BSV CTLR POINTED OUT ACFT #1 TO MFD RADAR CTLR. MFD CTLR TOOK RADAR ON ACFT #1 AND WAS PUT ON THE MFD FREQ. HOP WAS FLASHING THE HDOF ON ACFT #2 LNDG OSU. I ASKED HOP FOR CTL FOR LOWER ALT ON ACFT #2. SUPPLEMENTAL INFO FROM ACN 411841: AN DA10 FROM ERI TO OSU AT FL220 AND A B737A FROM PIT TO MDW CLBING TO FL260. CTLR IN THE PREVIOUS SECTOR POINTED B737 OUT TO ME. I SAID NO, KEEP HIM CLBING, I'LL TALK TO HIM HERE. MY D-SIDE GOT THE DA10 CTL TO DSND FROM THE PREVIOUS SECTOR. I DSNDED DA10 TO FL180 (I HAD TFC LOWER). I TOLD THE B737 TO KEEP CLBING. I WAS VERY BUSY AT THE TIME WITH CLE ARRS OVER MFD AND APE, ENRTE TFC, CLE ARRS HERE AND COMING. WHEN I LOOKED BACK I REALIZED THAT THE CLB-DSCNT RATIO WASN'T GOING TO WORK. I ASKED FOR RPTS AND TURNED THE DA10 L, SEPARATION WAS LOST AT 700 FT AND 4.7 MI. WHAT I PROBABLY SHOULD HAVE DONE WAS STOP THE B737 AT FL210 AND WAITED UNTIL THEY CLRED AND THEN DSNDED DA10. I DECIDED TO DSND DA10 BECAUSE HE WAS ON ARR AND I HAD TO GET HIM BELOW OTHER ARRS INBOUND TO CLE. THE CORRECT APCH WOULD HAVE BEEN, DA10 AT FL220, B737 AT FL210 AND IF I HAD TO SPIN DA10 TO GET HIM DOWN, THAT WOULD HAVE BEEN BEST.
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.