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Airborne conflict with a PA44 downwind turning base leg in class D airspace, and on the border of class B airspace and a king air climbing out from a nearby airport under class a airspace.
| Attributes | |
| ACN | 489016 |
| Time | |
| Date | 200010 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ads.airport |
| State Reference | TX |
| Altitude | msl single value : 2000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : ads.tower |
| Operator | general aviation : personal |
| Make Model Name | PA-44 Seminole Turbo Seminole |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | approach : traffic pattern |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : d10.tracon |
| Operator | general aviation : personal |
| Make Model Name | Super King Air 200 HDC |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller limited radar : 15 controller non radar : 4 |
| ASRS Report | 489016 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera other controllerb other flight crewa |
| Resolutory Action | controller : issued alert none taken : anomaly accepted none taken : insufficient time |
| Miss Distance | horizontal : 1500 vertical : 200 |
| Supplementary | |
| Problem Areas | Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
IFR twin propeller aircraft on left downwind runway 33 at addison airport, approximately 2 mi southwest of ads, and turning left base and, IFR king air, departed dallas love field (dal), climbing nebound. Conflict 2 mi southwest ads. Proximity 200 ft and 1/4 mi. Ads tower issued traffic alert to seminole who said he saw it. King air was faster and out in front.
Original NASA ASRS Text
Title: AIRBORNE CONFLICT WITH A PA44 DOWNWIND TURNING BASE LEG IN CLASS D AIRSPACE, AND ON THE BORDER OF CLASS B AIRSPACE AND A KING AIR CLBING OUT FROM A NEARBY ARPT UNDER CLASS A AIRSPACE.
Narrative: IFR TWIN PROP ACFT ON L DOWNWIND RWY 33 AT ADDISON ARPT, APPROX 2 MI SW OF ADS, AND TURNING L BASE AND, IFR KING AIR, DEPARTED DALLAS LOVE FIELD (DAL), CLBING NEBOUND. CONFLICT 2 MI SW ADS. PROX 200 FT AND 1/4 MI. ADS TWR ISSUED TFC ALERT TO SEMINOLE WHO SAID HE SAW IT. KING AIR WAS FASTER AND OUT IN FRONT.
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.