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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ZOB controller experienced operational error at approximately 11000 ft when misreading altitude and then climbing traffic to occupied altitude.
| Attributes | |
| ACN | 789662 |
| Time | |
| Date | 200806 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : tol.airport |
| State Reference | OH |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc tower : mdw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | general aviation : personal |
| Make Model Name | Super King Air 200 HDC |
| 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 radar : 20 controller time certified in position1 : 20 |
| ASRS Report | 789662 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 20400 vertical : 600 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
A departure came off toledo nwbound with an aircraft descending on V11 to dtw. There were 2 aircraft with similar sounding call signs causing problems over lfd by taking each other's clrncs. There was also a tol inbound over lfd that needed to get down and there was WX causing some deviations south of lfd. I misread the one aircraft in the descent. It said 11.5 and I read 15.0 and climbed the departure to 110. 10 seconds later; I saw my mistake and tried to stop the climb. It was just a little late.
Original NASA ASRS Text
Title: ZOB CTLR EXPERIENCED OPERROR AT APPROX 11000 FT WHEN MISREADING ALT AND THEN CLIMBING TFC TO OCCUPIED ALT.
Narrative: A DEP CAME OFF TOLEDO NWBOUND WITH AN ACFT DSNDING ON V11 TO DTW. THERE WERE 2 ACFT WITH SIMILAR SOUNDING CALL SIGNS CAUSING PROBS OVER LFD BY TAKING EACH OTHER'S CLRNCS. THERE WAS ALSO A TOL INBOUND OVER LFD THAT NEEDED TO GET DOWN AND THERE WAS WX CAUSING SOME DEVS S OF LFD. I MISREAD THE ONE ACFT IN THE DSCNT. IT SAID 11.5 AND I READ 15.0 AND CLBED THE DEP TO 110. 10 SECONDS LATER; I SAW MY MISTAKE AND TRIED TO STOP THE CLB. IT WAS JUST A LITTLE LATE.
Data retrieved from NASA's ASRS site as of May 2009 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.