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Mke TRACON controller experienced operational error at 7800 ft; approving non standard operations and misjudging climb performance; listing fatigue as contributory.
| Attributes | |
| ACN | 790139 |
| Time | |
| Date | 200806 |
| Place | |
| Locale Reference | airport : enw.airport |
| State Reference | WI |
| Altitude | msl single value : 7800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mke.tracon tower : zzz.tower |
| 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 | tracon : mke.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Conquest I/Conquest II |
| Flight Phase | descent : approach |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 25 flight time total : 100 |
| ASRS Report | 790139 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 13252 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While working a combined radar position at milwaukee approach; I lost separation between air carrier X (an overflt) to chicago ord airport; and aircraft Y (a C411) inbound to waukegan (ugn) airport. I approved air carrier Y on a nonstandard routing to expedite the flight. This caused me to descend this aircraft early to expedite the climb of an aircraft departing mke. This action caused the aircraft to later be in close proximity to the other aircraft; aircraft Y. I have been working 6 day work weeks for about 6 months. Having had a total of 4 days off in april; and 6 days off in may. I feel fatigue was a contributing factor in this error. I had contemplated calling in sick when I got up that morning; however; my fear of retaliation from my employer; the FAA; caused me to overrule my judgement and report to work.
Original NASA ASRS Text
Title: MKE TRACON CTLR EXPERIENCED OPERROR AT 7800 FT; APPROVING NON STANDARD OPS AND MISJUDGING CLIMB PERFORMANCE; LISTING FATIGUE AS CONTRIBUTORY.
Narrative: WHILE WORKING A COMBINED RADAR POS AT MILWAUKEE APCH; I LOST SEPARATION BTWN ACR X (AN OVERFLT) TO CHICAGO ORD ARPT; AND ACFT Y (A C411) INBOUND TO WAUKEGAN (UGN) ARPT. I APPROVED ACR Y ON A NONSTANDARD ROUTING TO EXPEDITE THE FLT. THIS CAUSED ME TO DSND THIS ACFT EARLY TO EXPEDITE THE CLB OF AN ACFT DEPARTING MKE. THIS ACTION CAUSED THE ACFT TO LATER BE IN CLOSE PROX TO THE OTHER ACFT; ACFT Y. I HAVE BEEN WORKING 6 DAY WORK WKS FOR ABOUT 6 MONTHS. HAVING HAD A TOTAL OF 4 DAYS OFF IN APRIL; AND 6 DAYS OFF IN MAY. I FEEL FATIGUE WAS A CONTRIBUTING FACTOR IN THIS ERROR. I HAD CONTEMPLATED CALLING IN SICK WHEN I GOT UP THAT MORNING; HOWEVER; MY FEAR OF RETALIATION FROM MY EMPLOYER; THE FAA; CAUSED ME TO OVERRULE MY JUDGEMENT AND RPT TO WORK.
Data retrieved from NASA's ASRS site as of May 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.