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Pct approach controller working feeder position loses separation between 2 commuter aircraft prior to handoff to the final controller.
| Attributes | |
| ACN | 616234 |
| Time | |
| Date | 200403 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : aml.vor |
| State Reference | VA |
| Altitude | msl single value : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : pct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : pct.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Jetstream 41 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 13 controller time certified in position1 : 10 |
| ASRS Report | 616234 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : supervisor |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : radar/mode c other controllera other controllerb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15060 vertical : 400 |
| Supplementary | |
| Problem Areas | Environmental Factor ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While working the mullr sector and feeding the final position in a south operation, aircraft X and Y checked on the frequency. After giving instructions to both aircraft, I realized that they would be tight on the final. As the aircraft progressed, I initiated diverging headings to obtain additional separation. During this process, I was dealing with aircraft Z. It appeared that aircraft Z was having radio trouble and required more attention than normal. After I was done working aircraft X and Y, the supervisor approached me asking if everything was ok between these 2 aircraft. Supervisor stated that ZNY had called questioning our separation. I stated that there was no problem, I also informed the supervisor that the second aircraft told me he had the first aircraft in sight. I felt that I had not lost 3 mi of separation.
Original NASA ASRS Text
Title: PCT APCH CTLR WORKING FEEDER POS LOSES SEPARATION BTWN 2 COMMUTER ACFT PRIOR TO HDOF TO THE FINAL CTLR.
Narrative: WHILE WORKING THE MULLR SECTOR AND FEEDING THE FINAL POS IN A S OP, ACFT X AND Y CHKED ON THE FREQ. AFTER GIVING INSTRUCTIONS TO BOTH ACFT, I REALIZED THAT THEY WOULD BE TIGHT ON THE FINAL. AS THE ACFT PROGRESSED, I INITIATED DIVERGING HDGS TO OBTAIN ADDITIONAL SEPARATION. DURING THIS PROCESS, I WAS DEALING WITH ACFT Z. IT APPEARED THAT ACFT Z WAS HAVING RADIO TROUBLE AND REQUIRED MORE ATTN THAN NORMAL. AFTER I WAS DONE WORKING ACFT X AND Y, THE SUPVR APCHED ME ASKING IF EVERYTHING WAS OK BTWN THESE 2 ACFT. SUPVR STATED THAT ZNY HAD CALLED QUESTIONING OUR SEPARATION. I STATED THAT THERE WAS NO PROB, I ALSO INFORMED THE SUPVR THAT THE SECOND ACFT TOLD ME HE HAD THE FIRST ACFT IN SIGHT. I FELT THAT I HAD NOT LOST 3 MI 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.