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During descent an air carrier was stopped 500 ft above VFR traffic. The air carrier received a TCASII warning and climbed to within 1400 ft of another aircraft.
| Attributes | |
| ACN | 547080 |
| Time | |
| Date | 200105 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mia.airport |
| State Reference | FL |
| Altitude | msl single value : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : mia.tracon |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 15 |
| ASRS Report | 547080 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : radar aircraft equipment : tcas |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | horizontal : 0 vertical : 1500 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
Air carrier X jet inbound was descending 500 ft above a VFR aircraft that was issued to air carrier X. Had an IFR above air carrier X. Air carrier X started a climb and I responded to his climb prior to loss of separation with IFR aircraft.
Original NASA ASRS Text
Title: DURING DSCNT AN ACR WAS STOPPED 500 FT ABOVE VFR TFC. THE ACR RECEIVED A TCASII WARNING AND CLBED TO WITHIN 1400 FT OF ANOTHER ACFT.
Narrative: ACR X JET INBOUND WAS DSNDING 500 FT ABOVE A VFR ACFT THAT WAS ISSUED TO ACR X. HAD AN IFR ABOVE ACR X. ACR X STARTED A CLB AND I RESPONDED TO HIS CLB PRIOR TO LOSS OF SEPARATION WITH IFR ACFT.
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.