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ARTCC radar controller misread the flight strip and thought that a DC10 was climbing above FL190. A BE20 at a lower altitude was issued climb to FL190, the same altitude as the DC10, resulting in loss of separation.
| Attributes | |
| ACN | 402758 |
| Time | |
| Date | 199805 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : dnv |
| State Reference | IL |
| Altitude | msl bound lower : 19000 msl bound upper : 19000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau tower : dtw |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Super King Air 200/Huron |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 6 controller radar : 4 |
| ASRS Report | 402758 |
| 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 | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 18000 vertical : 500 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was shipped to high altitude sector and I thought he was climbing to FL230. I observed aircraft #1's mode C indicate FL191 and I then climbed aircraft #2 to FL190. I should have reviewed aircraft #1's strip and verified his assigned altitude.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR MISREAD THE FLT STRIP AND THOUGHT THAT A DC10 WAS CLBING ABOVE FL190. A BE20 AT A LOWER ALT WAS ISSUED CLB TO FL190, THE SAME ALT AS THE DC10, RESULTING IN LOSS OF SEPARATION.
Narrative: ACFT #1 WAS SHIPPED TO HIGH ALT SECTOR AND I THOUGHT HE WAS CLBING TO FL230. I OBSERVED ACFT #1'S MODE C INDICATE FL191 AND I THEN CLBED ACFT #2 TO FL190. I SHOULD HAVE REVIEWED ACFT #1'S STRIP AND VERIFIED HIS ASSIGNED ALT.
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.