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2 aircraft under ATC control came in close proximity to one another while in arsa. Unable to determine if this was a controller error or pilot deviation.
| Attributes | |
| ACN | 144113 |
| Time | |
| Date | 199004 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : oma |
| State Reference | NE |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : oma |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other landing other |
| Route In Use | approach : straight in |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport |
| Flight Phase | climbout : intermediate altitude climbout : takeoff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller non radar : 3 controller radar : 2 |
| ASRS Report | 144113 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| 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 | horizontal : 12000 vertical : 900 |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
Narrative:
A medium large transport cleared for approach to runway 32L at eppley and was on a 4 mi straight in approach descending out of 3000' MSL. An small transport departing eppley to northeast for some unknown reason continued climbing turn to southwest-erly heading, climbing to 3000' MSL. Controller on the radar position noticed the climbing turn and alerted the small transport ot expedite his climb. The aircraft appeared to close within 2 mi and less than 1000' vertical sep west/O visibility sep being applied. I was not working radar position in question, so I am not sure as to whether the pilot deviated from his clearance or he was issued instructions which caused the loss of radar sep.
Original NASA ASRS Text
Title: 2 ACFT UNDER ATC CONTROL CAME IN CLOSE PROX TO ONE ANOTHER WHILE IN ARSA. UNABLE TO DETERMINE IF THIS WAS A CTLR ERROR OR PLT DEVIATION.
Narrative: A MLG CLRED FOR APCH TO RWY 32L AT EPPLEY AND WAS ON A 4 MI STRAIGHT IN APCH DSNDING OUT OF 3000' MSL. AN SMT DEPARTING EPPLEY TO NE FOR SOME UNKNOWN REASON CONTINUED CLBING TURN TO SW-ERLY HDG, CLBING TO 3000' MSL. CTLR ON THE RADAR POS NOTICED THE CLBING TURN AND ALERTED THE SMT OT EXPEDITE HIS CLB. THE ACFT APPEARED TO CLOSE WITHIN 2 MI AND LESS THAN 1000' VERT SEP W/O VIS SEP BEING APPLIED. I WAS NOT WORKING RADAR POS IN QUESTION, SO I AM NOT SURE AS TO WHETHER THE PLT DEVIATED FROM HIS CLRNC OR HE WAS ISSUED INSTRUCTIONS WHICH CAUSED THE LOSS OF RADAR SEP.
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.