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Loss of separation between a DC9 and a B757 climbing to FL290 nebound when the 60 KT faster B757 overtook the DC9.
| Attributes | |
| ACN | 395901 |
| Time | |
| Date | 199803 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : pit |
| State Reference | PA |
| Altitude | msl bound lower : 29000 msl bound upper : 29000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob tower : sdf |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Qualification | controller : radar pilot : instrument pilot : private |
| Experience | controller radar : 16 flight time total : 3000 |
| ASRS Report | 395901 |
| 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 other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 21600 vertical : 400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
2 departures off pit nebound FL230, back aircraft overtaking front by 60 KTS. Aircraft handed off to our sector radar controller. Put in FL290 and handed aircraft off to next sector per ZOB SOP. The next sector called about the overtake. Radar controller said he was not talking to either. I then called the back sector about the overtake I was in the middle of a conversation between the previous and next sector controllers. I did not hear that I was to stop the front aircraft at FL280. It turned out front aircraft was on our frequency.
Original NASA ASRS Text
Title: LOSS OF SEPARATION BTWN A DC9 AND A B757 CLBING TO FL290 NEBOUND WHEN THE 60 KT FASTER B757 OVERTOOK THE DC9.
Narrative: 2 DEPS OFF PIT NEBOUND FL230, BACK ACFT OVERTAKING FRONT BY 60 KTS. ACFT HANDED OFF TO OUR SECTOR RADAR CTLR. PUT IN FL290 AND HANDED ACFT OFF TO NEXT SECTOR PER ZOB SOP. THE NEXT SECTOR CALLED ABOUT THE OVERTAKE. RADAR CTLR SAID HE WAS NOT TALKING TO EITHER. I THEN CALLED THE BACK SECTOR ABOUT THE OVERTAKE I WAS IN THE MIDDLE OF A CONVERSATION BTWN THE PREVIOUS AND NEXT SECTOR CTLRS. I DID NOT HEAR THAT I WAS TO STOP THE FRONT ACFT AT FL280. IT TURNED OUT FRONT ACFT WAS ON OUR FREQ.
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.