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ATCT local controller at clt failed to notice a small BE40 aircraft following a large DHC8 with 2 pt 5 mi separation.
| Attributes | |
| ACN | 490417 |
| Time | |
| Date | 200011 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : clt.airport |
| State Reference | NC |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : clt.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : clt.tower |
| Operator | general aviation : corporate |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : radar |
| Experience | controller radar : 12 |
| ASRS Report | 490417 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Qualification | controller : radar |
| Events | |
| Anomaly | inflight encounter : wake turbulence non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera other controllerb other other : 3 |
| Resolutory Action | none taken : detected after the fact |
| Miss Distance | horizontal : 15000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working local east during a heavy mix of arrs and departures. Landing runway 23 and departing a crossing runway 18L. Issuing many runway xings. I failed to notice that I had lost wake turbulence separation with the small BE40 behind the large DHC8. The cabin attendant coordinator pointed this out to me approximately 5 mins later. I informed the tower supervisor of the situation, who then informed me that he had both aircraft in sight, which doesn't mean anything. I feel that the tower team concept failed in this case. Someone should have said something earlier and helped prevent the loss of separation.
Original NASA ASRS Text
Title: ATCT LCL CTLR AT CLT FAILED TO NOTICE A SMALL BE40 ACFT FOLLOWING A LARGE DHC8 WITH 2 PT 5 MI SEPARATION.
Narrative: I WAS WORKING LCL E DURING A HVY MIX OF ARRS AND DEPS. LNDG RWY 23 AND DEPARTING A XING RWY 18L. ISSUING MANY RWY XINGS. I FAILED TO NOTICE THAT I HAD LOST WAKE TURB SEPARATION WITH THE SMALL BE40 BEHIND THE LARGE DHC8. THE CAB COORDINATOR POINTED THIS OUT TO ME APPROX 5 MINS LATER. I INFORMED THE TWR SUPVR OF THE SIT, WHO THEN INFORMED ME THAT HE HAD BOTH ACFT IN SIGHT, WHICH DOESN'T MEAN ANYTHING. I FEEL THAT THE TWR TEAM CONCEPT FAILED IN THIS CASE. SOMEONE SHOULD HAVE SAID SOMETHING EARLIER AND HELPED PREVENT THE LOSS OF SEPARATION.
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.