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ZDV controller involved in an operational error when insufficient vertical and lateral spacing is provided between a climbing CL60 and an en route air carrier jet.
| Attributes | |
| ACN | 538122 |
| Time | |
| Date | 200202 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : dvv.vortac |
| State Reference | CO |
| Altitude | msl bound lower : 31000 msl bound upper : 36400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Challenger CL600 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller non radar : 3 controller radar : 12 |
| ASRS Report | 538122 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 22800 vertical : 1700 |
| Supplementary | |
| Problem Areas | Aircraft ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
CL60 (aircraft X) on ege departure climb clearance to FL370. Traffic converging, climbing out of FL310 to FL330. Aircraft X told to expedite out of FL350, which aircraft did. I estimated climb rate 2000 FPM. Aircraft Y wbound at FL350 was traffic for aircraft X. I turned aircraft Y left 20 degrees and told him I needed him to report level in 1 min. His altitude was FL364. I thought he would be level. He descended to FL363 for 1 min 19 seconds, then climbed again. I did not turn aircraft X because I did not want to disrupt his climb rate.
Original NASA ASRS Text
Title: ZDV CTLR INVOLVED IN AN OPERROR WHEN INSUFFICIENT VERT AND LATERAL SPACING IS PROVIDED BTWN A CLBING CL60 AND AN ENRTE ACR JET.
Narrative: CL60 (ACFT X) ON EGE DEP CLB CLRNC TO FL370. TFC CONVERGING, CLBING OUT OF FL310 TO FL330. ACFT X TOLD TO EXPEDITE OUT OF FL350, WHICH ACFT DID. I ESTIMATED CLB RATE 2000 FPM. ACFT Y WBOUND AT FL350 WAS TFC FOR ACFT X. I TURNED ACFT Y L 20 DEGS AND TOLD HIM I NEEDED HIM TO RPT LEVEL IN 1 MIN. HIS ALT WAS FL364. I THOUGHT HE WOULD BE LEVEL. HE DSNDED TO FL363 FOR 1 MIN 19 SECONDS, THEN CLBED AGAIN. I DID NOT TURN ACFT X BECAUSE I DID NOT WANT TO DISRUPT HIS CLB RATE.
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.