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A center trainee controller did not apply approved vertical separation procedures which resulted in a loss of separation between two aircraft.
| Attributes | |
| ACN | 1376767 |
| Time | |
| Date | 201608 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZID.ARTCC |
| State Reference | IN |
| Aircraft 1 | |
| Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | Direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | MD-90 Series (DC-9-90) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute Instructor |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 28 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
I was training a radar assist trainee at D77. A radar trainee with his instructor was working R77. Spacing was required for ord arrivals. Lck sector had an ord arrival that was behind aircraft X. The lck sector radar instructor told the R77 radar trainee to have aircraft X go direct fwa and fly fast. Aircraft X was going to be first. The radar trainee asked aircraft X what speed he could increase to. Aircraft X said he could fly at 280 knots while climbing to 28000 feet and then M.75 when he would level off.aircraft Y came to us climbing to 27000 feet from air hi sector. The radar trainee had my trainee call to get approval to climb higher for aircraft Y. My trainee called and got higher. Aircraft X was in the way; so the radar trainee could not climb aircraft Y. Aircraft X was climbing at only 100 feet per update on the radar. Aircraft X was trying to fly fast as requested. The radar trainee assigned aircraft X 30000 feet. Aircraft X left 28000 feet for 30000 feet. Immediately; the radar trainee then assigned aircraft Y 28000 feet. The instructor told the radar trainee that aircraft X was climbing so slow that he should wait before climbing aircraft Y. The radar trainee said that he was following the rules. The instructor said that you have to consider types and consider that aircraft X was putting all his energy into flying fast; his climb rate is extremely slow.the radar trainee turned aircraft Y 15 degrees left. The radar trainee asked aircraft X to expedite his climb. Aircraft X said that he could not climb very fast. Aircraft X said that he was doing the best he could. Separation was lost with approximately 4 miles and 900 feet separation. Several of our radar trainees assign rate of climb and descent instead of vectoring aircraft. The radar trainee could have started a vector much sooner. He should have evaluated aircraft X's extremely slow climb rate. He should have never assigned aircraft Y the altitude that aircraft X just left. The radar trainee should have told aircraft Y to stop his climb. He should have vectored both aircraft more than 15 degrees. The radar trainee and the assist trainee both learned a valuable lesson! Hopefully this loss of separation will be an eye opener to all the controllers in our area.
Original NASA ASRS Text
Title: A Center Trainee Controller did not apply approved vertical separation procedures which resulted in a loss of separation between two aircraft.
Narrative: I was training a Radar Assist trainee at D77. A Radar trainee with his instructor was working R77. Spacing was required for ORD arrivals. LCK Sector had an ORD arrival that was behind Aircraft X. The LCK Sector Radar Instructor told the R77 Radar Trainee to have Aircraft X go direct FWA and fly fast. Aircraft X was going to be first. The Radar trainee asked Aircraft X what speed he could increase to. Aircraft X said he could fly at 280 knots while climbing to 28000 feet and then M.75 when he would level off.Aircraft Y came to us climbing to 27000 feet from AIR HI Sector. The Radar Trainee had my trainee call to get approval to climb higher for Aircraft Y. My trainee called and got higher. Aircraft X was in the way; so the Radar Trainee could not climb Aircraft Y. Aircraft X was climbing at only 100 feet per update on the radar. Aircraft X was trying to fly fast as requested. The Radar Trainee assigned Aircraft X 30000 feet. Aircraft X left 28000 feet for 30000 feet. Immediately; the radar trainee then assigned Aircraft Y 28000 feet. The instructor told the Radar Trainee that Aircraft X was climbing so slow that he should wait before climbing Aircraft Y. The Radar Trainee said that he was following the rules. The instructor said that you have to consider types and consider that Aircraft X was putting all his energy into flying fast; his climb rate is extremely slow.The radar trainee turned Aircraft Y 15 degrees left. The radar trainee asked Aircraft X to expedite his climb. Aircraft X said that he could not climb very fast. Aircraft X said that he was doing the best he could. Separation was lost with approximately 4 miles and 900 feet separation. Several of our Radar Trainees assign rate of climb and descent instead of vectoring aircraft. The Radar Trainee could have started a vector much sooner. He should have evaluated Aircraft X's extremely slow climb rate. He should have never assigned Aircraft Y the altitude that Aircraft X just left. The radar trainee should have told Aircraft Y to stop his climb. He should have vectored both aircraft more than 15 degrees. The Radar Trainee and the Assist trainee both learned a valuable lesson! Hopefully this loss of separation will be an eye opener to all the controllers in our area.
Data retrieved from NASA's ASRS site 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.