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ZID developmental controller fails to recognize slow climb rate of one aircraft resulting in a loss of separation at FL215.
| Attributes | |
| ACN | 638168 |
| Time | |
| Date | 200411 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : loz.vortac |
| State Reference | KY |
| Altitude | msl single value : 21500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | controller limited radar : 2 controller non radar : 1 controller radar : 2 |
| ASRS Report | 638168 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : instructor |
| Qualification | controller : radar |
| Experience | controller radar : 22 |
| ASRS Report | 638270 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb |
| Resolutory Action | controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 27000 vertical : 900 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Inadequate scanning of the climb rate of one exceptionally slow clber caused me to turn one aircraft too close to another. One was climbing, one was descending, and the clber was a very slow clber (200-300/FPM). Supplemental information from acn 638270: aircraft #1 was climbing slowly and rate was insufficient to top aircraft #2. Aircraft #2 was turned and descended to miss. Descent rate was insufficient.
Original NASA ASRS Text
Title: ZID DEVELOPMENTAL CTLR FAILS TO RECOGNIZE SLOW CLB RATE OF ONE ACFT RESULTING IN A LOSS OF SEPARATION AT FL215.
Narrative: INADEQUATE SCANNING OF THE CLB RATE OF ONE EXCEPTIONALLY SLOW CLBER CAUSED ME TO TURN ONE ACFT TOO CLOSE TO ANOTHER. ONE WAS CLBING, ONE WAS DSNDING, AND THE CLBER WAS A VERY SLOW CLBER (200-300/FPM). SUPPLEMENTAL INFO FROM ACN 638270: ACFT #1 WAS CLBING SLOWLY AND RATE WAS INSUFFICIENT TO TOP ACFT #2. ACFT #2 WAS TURNED AND DSNDED TO MISS. DSCNT RATE WAS INSUFFICIENT.
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.