 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
D21 approach controller experienced near separation loss when distrs reportedly caused diminishing reaction time.
| Attributes | |
| ACN | 673772 |
| Time | |
| Date | 200509 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ptk.airport |
| State Reference | MI |
| Altitude | msl single value : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d21.tracon |
| Operator | general aviation : corporate |
| Make Model Name | HS 125 Series |
| Operating Under FAR Part | Part 91 |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : d21.tracon |
| Operator | general aviation : personal |
| Make Model Name | M-20 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | arrival : on vectors |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 22 |
| ASRS Report | 673772 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
I descended the mooney out of 7000 ft for 4000 ft. He used a slow rate of descent. The HS25 was cleared out of 10000 ft for 5000 ft. I knew I needed to watch the descent rates but got distraction by other things. I issued headings to establish divergence but shouldn't have been in the situation to begin with. I'm 45 yrs old now and think that 2 yrs ago I would have caught the altitudes sooner. My reflexes are slower now and most of the controller work force is in the same situation. I hope that experience will make up for my diminishing reaction times.
Original NASA ASRS Text
Title: D21 APCH CTLR EXPERIENCED NEAR SEPARATION LOSS WHEN DISTRS REPORTEDLY CAUSED DIMINISHING REACTION TIME.
Narrative: I DSNDED THE MOONEY OUT OF 7000 FT FOR 4000 FT. HE USED A SLOW RATE OF DSCNT. THE HS25 WAS CLRED OUT OF 10000 FT FOR 5000 FT. I KNEW I NEEDED TO WATCH THE DSCNT RATES BUT GOT DISTR BY OTHER THINGS. I ISSUED HDGS TO ESTABLISH DIVERGENCE BUT SHOULDN'T HAVE BEEN IN THE SITUATION TO BEGIN WITH. I'M 45 YRS OLD NOW AND THINK THAT 2 YRS AGO I WOULD HAVE CAUGHT THE ALTS SOONER. MY REFLEXES ARE SLOWER NOW AND MOST OF THE CTLR WORK FORCE IS IN THE SAME SITUATION. I HOPE THAT EXPERIENCE WILL MAKE UP FOR MY DIMINISHING REACTION TIMES.
Data retrieved from NASA's ASRS site as of January 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.