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Near midair collision. Flight crew of a B727 climb in response to a TCASII RA. 4 GA aircraft in formation passed 400 ft below during descent on a STAR arrival route.
| Attributes | |
| ACN | 435132 |
| Time | |
| Date | 199904 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : vkz.vor |
| State Reference | FL |
| Altitude | msl bound lower : 10800 msl bound upper : 11200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : enroute altitude change descent : vacating altitude |
| Route In Use | approach : visual arrival star : heatt.heatt5 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : mia.tracon |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 435132 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : multi engine pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : nmac |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Location: vkz 018 degree radial south of heatt. As we descended through 10800 ft on the heatt arrival, we received a TA. I went to the 5 mi scale and observed a target at approximately 12:30 position, 100 ft below our altitude. We then received an RA to climb. The first officer initiated a climb as I continued to look for the target. I spotted 1 GA aircraft as the first officer complied with the 1500-1800 FPM climb RA. At our apex we were 400 ft above the target. As the target passed, we were able to discern 4 GA aircraft in formation. I advised ATC of our altitude deviation and asked him if he had seen the target. He initially stated that he had not and then said that he did see them after I had called. We descended and landed without incident.
Original NASA ASRS Text
Title: NMAC. FLC OF A B727 CLB IN RESPONSE TO A TCASII RA. 4 GA ACFT IN FORMATION PASSED 400 FT BELOW DURING DSCNT ON A STAR ARR RTE.
Narrative: LOCATION: VKZ 018 DEG RADIAL S OF HEATT. AS WE DSNDED THROUGH 10800 FT ON THE HEATT ARR, WE RECEIVED A TA. I WENT TO THE 5 MI SCALE AND OBSERVED A TARGET AT APPROX 12:30 POS, 100 FT BELOW OUR ALT. WE THEN RECEIVED AN RA TO CLB. THE FO INITIATED A CLB AS I CONTINUED TO LOOK FOR THE TARGET. I SPOTTED 1 GA ACFT AS THE FO COMPLIED WITH THE 1500-1800 FPM CLB RA. AT OUR APEX WE WERE 400 FT ABOVE THE TARGET. AS THE TARGET PASSED, WE WERE ABLE TO DISCERN 4 GA ACFT IN FORMATION. I ADVISED ATC OF OUR ALTDEV AND ASKED HIM IF HE HAD SEEN THE TARGET. HE INITIALLY STATED THAT HE HAD NOT AND THEN SAID THAT HE DID SEE THEM AFTER I HAD CALLED. WE DSNDED AND LANDED WITHOUT INCIDENT.
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.