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ZOB controller experiences operational error when descending a regional jet through altitude of C550 with less than required lateral separation.
| Attributes | |
| ACN | 699219 |
| Time | |
| Date | 200605 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : ape.vortac |
| State Reference | OH |
| Altitude | msl bound lower : 19000 msl bound upper : 19700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | general aviation : personal |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 11 controller non radar : 4 controller radar : 8 controller time certified in position1 : 4 controller time certified in position2 : 6 |
| ASRS Report | 699219 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | horizontal : 15000 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While working combined sectors; I descended the CRJ2 to FL190 just southwest of ape VOR. The C550 was at FL200 about 10 mi east of ape. When the aircraft were about 3 mins apart; I descended the L550 to 16000 ft. At FL197; I caught the situation; climbed the C550 to FL200 and descended the CRJ2 to 15000 ft. But separation was lost.
Original NASA ASRS Text
Title: ZOB CTLR EXPERIENCES OPERROR WHEN DSNDING A REGIONAL JET THROUGH ALT OF C550 WITH LESS THAN REQUIRED LATERAL SEPARATION.
Narrative: WHILE WORKING COMBINED SECTORS; I DSNDED THE CRJ2 TO FL190 JUST SW OF APE VOR. THE C550 WAS AT FL200 ABOUT 10 MI E OF APE. WHEN THE ACFT WERE ABOUT 3 MINS APART; I DSNDED THE L550 TO 16000 FT. AT FL197; I CAUGHT THE SITUATION; CLBED THE C550 TO FL200 AND DSNDED THE CRJ2 TO 15000 FT. BUT SEPARATION WAS LOST.
Data retrieved from NASA's ASRS site as of January 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.