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ZDV radar controller climbed traffic through FL310 occupied with a civil turbojet at cruise altitude resulting in a loss of separation.
| Attributes | |
| ACN | 557364 |
| Time | |
| Date | 200208 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : dvv.vortac |
| State Reference | CO |
| Altitude | msl single value : 39000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence Thunderstorm |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Citation I/SP |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdv.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 557364 |
| Person 2 | |
| Affiliation | company : corporate |
| 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 : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15000 vertical : 1700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I believe I caused the situation to occur by not correctly evaluating the altitude of the climbing aircraft. The situation is one that happens numerous times daily with all the departure sectors in ZDV. We get false conflict alerts (ca) on departure aircraft with high altitude overflts. After a while these do not get the attention a 'ca' should get. It is the old cry wolf situation and I believe a dangerous one. I thought aircraft X was a departure out of bjc and not one out of gjt.
Original NASA ASRS Text
Title: ZDV RADAR CTLR CLBED TFC THROUGH FL310 OCCUPIED WITH A CIVIL TURBOJET AT CRUISE ALT RESULTING IN A LOSS OF SEPARATION.
Narrative: I BELIEVE I CAUSED THE SIT TO OCCUR BY NOT CORRECTLY EVALUATING THE ALT OF THE CLBING ACFT. THE SIT IS ONE THAT HAPPENS NUMEROUS TIMES DAILY WITH ALL THE DEP SECTORS IN ZDV. WE GET FALSE CONFLICT ALERTS (CA) ON DEP ACFT WITH HIGH ALT OVERFLTS. AFTER A WHILE THESE DO NOT GET THE ATTN A 'CA' SHOULD GET. IT IS THE OLD CRY WOLF SIT AND I BELIEVE A DANGEROUS ONE. I THOUGHT ACFT X WAS A DEP OUT OF BJC AND NOT ONE OUT OF GJT.
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.