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ARTCC controller failed to provide legal separation of a climbing SF34 and a B757 descending due to the unusually slow climb rate of the SF34.
| Attributes | |
| ACN | 471247 |
| Time | |
| Date | 200005 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : fnt.vortac |
| State Reference | MI |
| Altitude | msl single value : 12300 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc tower : dfw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller limited radar : 1 controller non radar : 1 controller radar : 23 |
| ASRS Report | 471247 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued new clearance controller : separated traffic |
| Miss Distance | horizontal : 12000 vertical : 200 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error other |
Narrative:
A lan departure over psi climbing at only 700 FPM got together with an inbound to dtw over the polar intersection due in part to the slow rate of climb and my inability to provide 5 mi of lateral separation. Any other airline we work who flies SF34 conservatively climbs at 1200 FPM or more.
Original NASA ASRS Text
Title: ARTCC CTLR FAILED TO PROVIDE LEGAL SEPARATION OF A CLBING SF34 AND A B757 DSNDING DUE TO THE UNUSUALLY SLOW CLB RATE OF THE SF34.
Narrative: A LAN DEP OVER PSI CLBING AT ONLY 700 FPM GOT TOGETHER WITH AN INBOUND TO DTW OVER THE POLAR INTXN DUE IN PART TO THE SLOW RATE OF CLB AND MY INABILITY TO PROVIDE 5 MI OF LATERAL SEPARATION. ANY OTHER AIRLINE WE WORK WHO FLIES SF34 CONSERVATIVELY CLBS AT 1200 FPM OR MORE.
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.