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ZOB ARTCC radar trainee takes handoff on an MD83 from adjacent sector and authorizes the other sector to descend the aircraft to FL310 through an occupied altitude.
| Attributes | |
| ACN | 627820 |
| Time | |
| Date | 200408 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : yqo.vor |
| State Reference | OH |
| Altitude | msl single value : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : instructor |
| Qualification | controller : radar |
| Experience | controller radar : 9 controller time certified in position1 : 2 |
| ASRS Report | 627820 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | controller military : 10 |
| ASRS Report | 627818 |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert atc equipment other atc equipment : radar/mode c other controllera other controllerb other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 22200 vertical : 1100 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Trainee released FL310 through altitude procedures on aircraft Y. Aircraft X was cruising at FL330. When aircraft Y checked in out of FL348 corrective action was taken to keep more than 5 mi. Unfortunately, it was not in time and loss of separation occurred. Supplemental information from acn 627818: I took radar contact on aircraft Y who was looking for lower. I typed in 310 so lake could give him lower. As soon as the aircraft checked in my trainer and I took evasive action. I turned the descending aircraft 30 degrees to the right. He turned the cruising aircraft to a 180 degree heading. Both planes were cleared back on course when clear.
Original NASA ASRS Text
Title: ZOB ARTCC RADAR TRAINEE TAKES HDOF ON AN MD83 FROM ADJACENT SECTOR AND AUTHORIZES THE OTHER SECTOR TO DSND THE ACFT TO FL310 THROUGH AN OCCUPIED ALT.
Narrative: TRAINEE RELEASED FL310 THROUGH ALT PROCS ON ACFT Y. ACFT X WAS CRUISING AT FL330. WHEN ACFT Y CHKED IN OUT OF FL348 CORRECTIVE ACTION WAS TAKEN TO KEEP MORE THAN 5 MI. UNFORTUNATELY, IT WAS NOT IN TIME AND LOSS OF SEPARATION OCCURRED. SUPPLEMENTAL INFO FROM ACN 627818: I TOOK RADAR CONTACT ON ACFT Y WHO WAS LOOKING FOR LOWER. I TYPED IN 310 SO LAKE COULD GIVE HIM LOWER. AS SOON AS THE ACFT CHKED IN MY TRAINER AND I TOOK EVASIVE ACTION. I TURNED THE DSNDING ACFT 30 DEGS TO THE R. HE TURNED THE CRUISING ACFT TO A 180 DEG HDG. BOTH PLANES WERE CLRED BACK ON COURSE WHEN 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.