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A B767 descending into mia received a TCASII TA and had a BE99 in sight. Approach control directed both aircraft to break right which was followed by a TCASII RA climb.
| Attributes | |
| ACN | 431539 |
| Time | |
| Date | 199903 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : vkz.vor |
| State Reference | FL |
| Altitude | msl bound lower : 10000 msl bound upper : 10800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zma.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | arrival star : heatt 5 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zma.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Airliner 99 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | arrival star : heatt 5 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 10000 flight time type : 1800 |
| ASRS Report | 431539 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment : tcas other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
We were descending on heatt 5 arrival to miami. Speed 330 KTS assigned, leveling at 10000 ft. Passing 10500 ft, we got a TCASII TA and I saw the aircraft ahead and below us. I could not tell its direction of flight. We shallowed our descent and then got a RA climb. As we initiated the climb the controller (new voice) said, 'air carrier X break left, aircraft Y break right.' both aircraft complied. We passed above and behind the BE99 climbing to 10800 ft. We then got vectors to a new course and descended to 10000 ft. I believe that was a controller error. The BE99 probably did not descend as fast as anticipated. We estimate the miss at 500 ft vertical and 1 mi horizontal. TCASII worked as designed.
Original NASA ASRS Text
Title: A B767 DSNDING INTO MIA RECEIVED A TCASII TA AND HAD A BE99 IN SIGHT. APCH CTL DIRECTED BOTH ACFT TO BREAK R WHICH WAS FOLLOWED BY A TCASII RA CLB.
Narrative: WE WERE DSNDING ON HEATT 5 ARR TO MIAMI. SPD 330 KTS ASSIGNED, LEVELING AT 10000 FT. PASSING 10500 FT, WE GOT A TCASII TA AND I SAW THE ACFT AHEAD AND BELOW US. I COULD NOT TELL ITS DIRECTION OF FLT. WE SHALLOWED OUR DSCNT AND THEN GOT A RA CLB. AS WE INITIATED THE CLB THE CTLR (NEW VOICE) SAID, 'ACR X BREAK L, ACFT Y BREAK R.' BOTH ACFT COMPLIED. WE PASSED ABOVE AND BEHIND THE BE99 CLBING TO 10800 FT. WE THEN GOT VECTORS TO A NEW COURSE AND DSNDED TO 10000 FT. I BELIEVE THAT WAS A CTLR ERROR. THE BE99 PROBABLY DID NOT DSND AS FAST AS ANTICIPATED. WE ESTIMATE THE MISS AT 500 FT VERT AND 1 MI HORIZ. TCASII WORKED AS DESIGNED.
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.