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Phl approach controller experienced operational error at 3000 when misjudging anticipated turn radius resulting in a loss of separation.
| Attributes | |
| ACN | 759246 |
| Time | |
| Date | 200710 |
| Place | |
| Locale Reference | airport : phl.airport |
| State Reference | PA |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl.tracon |
| Operator | general aviation : corporate |
| Make Model Name | HS 125 Series |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | ils localizer only : 6 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument non precision arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : phl.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 17 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision arrival : on vectors arrival star : n/a |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 19 |
| ASRS Report | 759246 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert aircraft equipment : tcas other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 0 |
| Supplementary | |
| Problem Areas | Weather ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Vectoring for back course runway 6 at pne. Cpr jet wbound at 3000 ft DH8B sbound on localizer to runway 17. When instructed to turn sbound; easterly wind made turning radius larger than anticipated. Separation loss.
Original NASA ASRS Text
Title: PHL APCH CTLR EXPERIENCED OPERROR AT 3000 WHEN MISJUDGING ANTICIPATED TURN RADIUS RESULTING IN A LOSS OF SEPARATION.
Narrative: VECTORING FOR BACK COURSE RWY 6 AT PNE. CPR JET WBOUND AT 3000 FT DH8B SBOUND ON LOC TO RWY 17. WHEN INSTRUCTED TO TURN SBOUND; EASTERLY WIND MADE TURNING RADIUS LARGER THAN ANTICIPATED. SEPARATION LOSS.
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.