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Aircraft X climb to occupied altitude had less than standard separation from small transport Y. System error.
| Attributes | |
| ACN | 241509 |
| Time | |
| Date | 199305 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : fnt |
| State Reference | MI |
| Altitude | msl bound lower : 8000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : fnt |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | other personnel other |
| Qualification | controller : radar |
| Experience | controller radar : 3 |
| ASRS Report | 241509 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | other other : unspecified atc |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X was being worked by ATC at 8000 overflying flint airspace. The coordinator informed the radar controller this aircraft was at 8000. The controller then issued an IFR clearance to small transport Y at 7500 approximately 3 mi on of aircraft X who was sbound. The aircraft's targets merged on the radar scope when the controller noticed and then descended aircraft X to 7000. The radar controller responsible then asked the other controllers to keep quiet about it stating 'we will all get in trouble.' at no time were TA's issued to either aircraft. The controller responsible was the controller-in-charge and has not as of this time, reported the incident to her supervisor or to persons or departments responsible for processing incidents such as this.
Original NASA ASRS Text
Title: ACFT X CLB TO OCCUPIED ALT HAD LTSS FROM SMT Y. SYS ERROR.
Narrative: ACFT X WAS BEING WORKED BY ATC AT 8000 OVERFLYING FLINT AIRSPACE. THE COORDINATOR INFORMED THE RADAR CTLR THIS ACFT WAS AT 8000. THE CTLR THEN ISSUED AN IFR CLRNC TO SMT Y AT 7500 APPROX 3 MI ON OF ACFT X WHO WAS SBOUND. THE ACFT'S TARGETS MERGED ON THE RADAR SCOPE WHEN THE CTLR NOTICED AND THEN DSNDED ACFT X TO 7000. THE RADAR CTLR RESPONSIBLE THEN ASKED THE OTHER CTLRS TO KEEP QUIET ABOUT IT STATING 'WE WILL ALL GET IN TROUBLE.' AT NO TIME WERE TA'S ISSUED TO EITHER ACFT. THE CTLR RESPONSIBLE WAS THE CTLR-IN-CHARGE AND HAS NOT AS OF THIS TIME, RPTED THE INCIDENT TO HER SUPVR OR TO PERSONS OR DEPARTMENTS RESPONSIBLE FOR PROCESSING INCIDENTS SUCH AS THIS.
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.