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Air carrier Y climb through occupied altitude had less than standard separation from aircraft X. System error.
| Attributes | |
| ACN | 217382 |
| Time | |
| Date | 199208 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : mmj |
| State Reference | PA |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Route In Use | enroute : direct enroute airway : zob |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 8 |
| ASRS Report | 217382 |
| Person 2 | |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 14700 vertical : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X overflt bsv-mmj at 110. Air carrier Y pit departure mmj-bsv level at 100, issued climb clearance to air carrier Y to 120. 24 seconds later told air carrier Y to maintain 100. Problem arose because of 'tunnel' vision on air carrier Y request for higher. Faster jet traffic behind. Air carrier Y was above and no factor, so I issued climb to air carrier Y before aircraft X clear.
Original NASA ASRS Text
Title: ACR Y CLB THROUGH OCCUPIED ALT HAD LTSS FROM ACFT X. SYS ERROR.
Narrative: ACFT X OVERFLT BSV-MMJ AT 110. ACR Y PIT DEP MMJ-BSV LEVEL AT 100, ISSUED CLB CLRNC TO ACR Y TO 120. 24 SECONDS LATER TOLD ACR Y TO MAINTAIN 100. PROBLEM AROSE BECAUSE OF 'TUNNEL' VISION ON ACR Y REQUEST FOR HIGHER. FASTER JET TFC BEHIND. ACR Y WAS ABOVE AND NO FACTOR, SO I ISSUED CLB TO ACR Y BEFORE ACFT X CLR.
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.