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Less than standard separation occurred when wrong aircraft took a climb clearance.
| Attributes | |
| ACN | 161351 |
| Time | |
| Date | 199010 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : rod |
| State Reference | OH |
| Altitude | msl bound lower : 21300 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid tower : san |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 6 |
| ASRS Report | 161351 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 700 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Error |
Narrative:
Large transport X southbound at FL220. Medium large transport Y climbing to FL210. Medium large transport Z was climbing to 10000'. I cleared medium large transport Z to FL220, then was distracted by pending coordination. Medium large transport Y read back, 'climbing to FL220.' I then observed medium large transport Y leaving FL212. I told medium large transport Y to maintain FL210 and to expedite to FL210. I then told large transport X to climb to FL230 and expedite the climb. Sep was lost.
Original NASA ASRS Text
Title: LESS THAN STANDARD SEPARATION OCCURRED WHEN WRONG ACFT TOOK A CLIMB CLRNC.
Narrative: LGT X SBND AT FL220. MLG Y CLBING TO FL210. MLG Z WAS CLBING TO 10000'. I CLRED MLG Z TO FL220, THEN WAS DISTRACTED BY PENDING COORD. MLG Y READ BACK, 'CLBING TO FL220.' I THEN OBSERVED MLG Y LEAVING FL212. I TOLD MLG Y TO MAINTAIN FL210 AND TO EXPEDITE TO FL210. I THEN TOLD LGT X TO CLB TO FL230 AND EXPEDITE THE CLB. SEP WAS LOST.
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.