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Flight crew of a B727-200, descended in response to a TCASII RA and then returned to assigned after clear of traffic indicated by TCASII.
| Attributes | |
| ACN | 445400 |
| Time | |
| Date | 199908 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : dxo.vor |
| State Reference | MI |
| Altitude | msl bound lower : 5800 msl bound upper : 6400 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d21.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : polar.polar 1 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : commercial pilot : flight engineer pilot : instrument pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 225 flight time total : 15000 flight time type : 1425 |
| ASRS Report | 445400 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : returned to assigned altitude flight crew : took precautionary avoidance action |
| Miss Distance | horizontal : 0 vertical : 600 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Level at 6000 ft MSL on STAR into xyz was advised of VFR traffic at 12 O'clock position and 5500 ft and climbing opposite direction, we were in the base of broken layer of clouds at approximately 5600-5800 ft MSL TCASII showed a TA target at 12 O'clock at 5600 ft MSL and climbing. A visual search could not locate traffic. An RA to 'climb' sounded and the first officer initiated promptly a climb at 6400 ft MSL. The TCASII issued a 'clear of conflict' and shown the target had passed below at 5800 ft MSL and climbing. We then notified approach of the RA and descended back to 6000 ft to resume the STAR. No visual contact was ever made with VFR traffic.
Original NASA ASRS Text
Title: FLC OF A B727-200, DSNDED IN RESPONSE TO A TCASII RA AND THEN RETURNED TO ASSIGNED AFTER CLR OF TFC INDICATED BY TCASII.
Narrative: LEVEL AT 6000 FT MSL ON STAR INTO XYZ WAS ADVISED OF VFR TFC AT 12 O'CLOCK POS AND 5500 FT AND CLBING OPPOSITE DIRECTION, WE WERE IN THE BASE OF BROKEN LAYER OF CLOUDS AT APPROX 5600-5800 FT MSL TCASII SHOWED A TA TARGET AT 12 O'CLOCK AT 5600 FT MSL AND CLBING. A VISUAL SEARCH COULD NOT LOCATE TFC. AN RA TO 'CLB' SOUNDED AND THE FO INITIATED PROMPTLY A CLB AT 6400 FT MSL. THE TCASII ISSUED A 'CLR OF CONFLICT' AND SHOWN THE TARGET HAD PASSED BELOW AT 5800 FT MSL AND CLBING. WE THEN NOTIFIED APCH OF THE RA AND DSNDED BACK TO 6000 FT TO RESUME THE STAR. NO VISUAL CONTACT WAS EVER MADE WITH VFR TFC.
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.