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Less than standard separation between an B737 and MD80 both on vectors for the runway approach. Both acrs received TCASII RA's and took evasive action. Operational error.
| Attributes | |
| ACN | 346259 |
| Time | |
| Date | 199609 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : phl |
| State Reference | PA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl tracon : msp |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 13000 flight time type : 6000 |
| ASRS Report | 346259 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 11100 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
In moderate air, being vectored by phl approach control to intercept localizer to runway 9R phl. While heading 130 degrees for intercept, noticed TCASII picking up another aircraft at 4300 ft. TCASII then gave a TA. We descended to 3000 ft and turned to a heading 180 degrees. No further conflict resulted. Supplemental information from acn: 346261: while being vectored for approach runway 9R phl we received a TCASII RA. We followed the directions of TCASII and climbed approximately 300 ft until the RA stopped. Aircraft were being vectored around WX which may have confused the approach controller.
Original NASA ASRS Text
Title: LTSS BTWN AN B737 AND MD80 BOTH ON VECTORS FOR THE RWY APCH. BOTH ACRS RECEIVED TCASII RA'S AND TOOK EVASIVE ACTION. OPERROR.
Narrative: IN MODERATE AIR, BEING VECTORED BY PHL APCH CTL TO INTERCEPT LOC TO RWY 9R PHL. WHILE HDG 130 DEGS FOR INTERCEPT, NOTICED TCASII PICKING UP ANOTHER ACFT AT 4300 FT. TCASII THEN GAVE A TA. WE DSNDED TO 3000 FT AND TURNED TO A HDG 180 DEGS. NO FURTHER CONFLICT RESULTED. SUPPLEMENTAL INFO FROM ACN: 346261: WHILE BEING VECTORED FOR APCH RWY 9R PHL WE RECEIVED A TCASII RA. WE FOLLOWED THE DIRECTIONS OF TCASII AND CLBED APPROX 300 FT UNTIL THE RA STOPPED. ACFT WERE BEING VECTORED AROUND WX WHICH MAY HAVE CONFUSED THE APCH CTLR.
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.