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An mdt air carrier crew had a TCASII alert calling for a climb while they were just clearing the clouds on approach. They made a go around as they were unable to complete the approach.
| Attributes | |
| ACN | 208374 |
| Time | |
| Date | 199204 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : phl |
| State Reference | PA |
| Altitude | msl bound lower : 4000 msl bound upper : 4200 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phl |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | descent : approach descent other landing : missed approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 12000 flight time type : 6000 |
| ASRS Report | 208374 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : nmac non adherence : clearance other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Approach control cleared our flight to intercept localizer. Small aircraft aircraft was advised of our position. We had just broken out of clouds at about 4200 ft. Small aircraft said he had us in sight. Approach control told us to call tower. We were cleared to 3000 ft. TCASII TA warning showed conflict traffic 200 ft below us. Then TCASII gave climb command which we did to avoid the traffic which was crossing localizer centerline and 200 ft below us. We followed command and advised tower that we would not be able to land from this approach due to our altitude and proximity to runway. Given vectors for second approach.
Original NASA ASRS Text
Title: AN MDT ACR CREW HAD A TCASII ALERT CALLING FOR A CLB WHILE THEY WERE JUST CLRING THE CLOUDS ON APCH. THEY MADE A GAR AS THEY WERE UNABLE TO COMPLETE THE APCH.
Narrative: APCH CTL CLRED OUR FLT TO INTERCEPT LOC. SMA ACFT WAS ADVISED OF OUR POS. WE HAD JUST BROKEN OUT OF CLOUDS AT ABOUT 4200 FT. SMA SAID HE HAD US IN SIGHT. APCH CTL TOLD US TO CALL TWR. WE WERE CLRED TO 3000 FT. TCASII TA WARNING SHOWED CONFLICT TFC 200 FT BELOW US. THEN TCASII GAVE CLB COMMAND WHICH WE DID TO AVOID THE TFC WHICH WAS XING LOC CTRLINE AND 200 FT BELOW US. WE FOLLOWED COMMAND AND ADVISED TWR THAT WE WOULD NOT BE ABLE TO LAND FROM THIS APCH DUE TO OUR ALT AND PROX TO RWY. GIVEN VECTORS FOR SECOND APCH.
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.