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OJT in progress and instructor waited too long to resolve a conflict, separation lost between climbing small transport and descending mlt.
| Attributes | |
| ACN | 158376 |
| Time | |
| Date | 199009 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : enl |
| State Reference | IL |
| Altitude | msl bound lower : 7000 msl bound upper : 7700 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air taxi |
| Make Model Name | Small Transport |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : zkc |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | other |
| Make Model Name | Military Transport |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 158376 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was the OJT instrument for the radar position the sector was getting very busy as it always does at that time of day. The traffic conflict was an air taxi departure off of stl climbing to 11000' and an medium large transport ambiguity. Landing blv that needed to be at 7000'. The trnee issued a crossing restriction to the air evacuate/evacuation that would have provided sep and compliance with the letter of agreement for the altitude of 7000'. The air evacuate/evacuation came back after approximately 45 seconds to inform the trnee that he could not comply with the restriction. After allowing the trnee time to apply another form of sep I took over the position and issued vectors to both aircraft but it turned out too little too late.
Original NASA ASRS Text
Title: OJT IN PROGRESS AND INSTRUCTOR WAITED TOO LONG TO RESOLVE A CONFLICT, SEPARATION LOST BETWEEN CLIMBING SMT AND DESCENDING MLT.
Narrative: I WAS THE OJT INSTR FOR THE RADAR POS THE SECTOR WAS GETTING VERY BUSY AS IT ALWAYS DOES AT THAT TIME OF DAY. THE TFC CONFLICT WAS AN AIR TAXI DEP OFF OF STL CLBING TO 11000' AND AN MLG AMB. LNDG BLV THAT NEEDED TO BE AT 7000'. THE TRNEE ISSUED A XING RESTRICTION TO THE AIR EVAC THAT WOULD HAVE PROVIDED SEP AND COMPLIANCE WITH THE LETTER OF AGREEMENT FOR THE ALT OF 7000'. THE AIR EVAC CAME BACK AFTER APPROX 45 SECS TO INFORM THE TRNEE THAT HE COULD NOT COMPLY WITH THE RESTRICTION. AFTER ALLOWING THE TRNEE TIME TO APPLY ANOTHER FORM OF SEP I TOOK OVER THE POS AND ISSUED VECTORS TO BOTH ACFT BUT IT TURNED OUT TOO LITTLE TOO LATE.
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.