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Multiple runway operation intersecting runways approachs aircraft X and Y had less than standard separation. System error.
| Attributes | |
| ACN | 268551 |
| Time | |
| Date | 199404 |
| Day | Tue |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : sdf |
| State Reference | KY |
| Altitude | msl bound lower : 500 msl bound upper : 500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : sdf tower : sdf artcc : zjx |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | oversight : supervisor |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 9 controller supervisory : 3 |
| ASRS Report | 268551 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : ground critical conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other other : unspecified atc |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 6000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure Operational Error |
Narrative:
As the watch supervisor instructed a controller to conduct simultaneous lndgs on intersecting runways utilizing group separation (one aircraft holds short of the intersection). However, I did not anticipate the lack of visual separation capability on the tower's part. Aircraft X and Y lost standard radar separation as they approached the airport.
Original NASA ASRS Text
Title: MULTIPLE RWY OP INTERSECTING RWYS APCHS ACFT X AND Y HAD LTSS. SYS ERROR.
Narrative: AS THE WATCH SUPVR INSTRUCTED A CTLR TO CONDUCT SIMULTANEOUS LNDGS ON INTERSECTING RWYS UTILIZING GROUP SEPARATION (ONE ACFT HOLDS SHORT OF THE INTXN). HOWEVER, I DID NOT ANTICIPATE THE LACK OF VISUAL SEPARATION CAPABILITY ON THE TWR'S PART. ACFT X AND Y LOST STANDARD RADAR SEPARATION AS THEY APCHED THE ARPT.
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.