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Reported loss of separation when an air carrier climbing to FL290 conflicted with a private aircraft descending to the same altitude.
| Attributes | |
| ACN | 388578 |
| Time | |
| Date | 199712 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : rod |
| State Reference | OH |
| Altitude | msl bound lower : 29000 msl bound upper : 29000 |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : flight data |
| Qualification | controller : radar |
| Experience | controller radar : 2 |
| ASRS Report | 388578 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 12000 vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
It was a busy session with chop everywhere. 2 departures off of dtw over rod were stopped at FL280 and we had a wbound inbound to ind. The ind arrival was taken down to FL290. When the first departure off of dtw checked in he was climbed to FL290 clear of the inbound, and when the second departure called she immediately climbed him also to FL290. FL290 was never put in the data block. Both the tracker and the d-side were off-line coordinating.
Original NASA ASRS Text
Title: RPTED LOSS OF SEPARATION WHEN AN ACR CLBING TO FL290 CONFLICTED WITH A PVT ACFT DSNDING TO THE SAME ALT.
Narrative: IT WAS A BUSY SESSION WITH CHOP EVERYWHERE. 2 DEPS OFF OF DTW OVER ROD WERE STOPPED AT FL280 AND WE HAD A WBOUND INBOUND TO IND. THE IND ARR WAS TAKEN DOWN TO FL290. WHEN THE FIRST DEP OFF OF DTW CHKED IN HE WAS CLBED TO FL290 CLR OF THE INBOUND, AND WHEN THE SECOND DEP CALLED SHE IMMEDIATELY CLBED HIM ALSO TO FL290. FL290 WAS NEVER PUT IN THE DATA BLOCK. BOTH THE TRACKER AND THE D-SIDE WERE OFF-LINE COORDINATING.
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.