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Near midair collision between an arriving B727 in level flight, 20 mi out from the airport, and an unknown aircraft approaching head-on in the opposite direction. Controller issued a TA.
| Attributes | |
| ACN | 340870 |
| Time | |
| Date | 199607 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : fll |
| State Reference | FL |
| Altitude | msl bound lower : 2000 msl bound upper : 2000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia tower : msp |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar other other : other |
| Experience | controller non radar : 10 controller radar : 2 |
| ASRS Report | 340870 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 300 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
Narrative:
B727, was on downwind leg abeam fll. Due to WX, aircraft asked for lower altitude. Lowest altitude available was 2000 ft. Approximately 20 mi east of airport aircraft was given a left turn to 270 degrees to join final. Several other xmissions were made to other aircraft. When I was issuing approach clearance to B727, I then observed VFR traffic, and issued a traffic call immediately 12 O'clock, 2 mi, eastbound at 1700 ft, type unknown. B727, didn't see aircraft. He responded that he had just had a near miss. I believe this situation is caused by 3 factors: WX causing use of non-standard altitudes and rtes for arrival traffic. The VFR aircraft flying on the approach course, opposite direction to level of traffic, not using flight following or judgement on his choice of routing. My inaction as controller to issue an immediate climb to B727, once the VFR traffic was observed.
Original NASA ASRS Text
Title: NMAC BTWN AN ARRIVING B727 IN LEVEL FLT, 20 MI OUT FROM THE ARPT, AND AN UNKNOWN ACFT APCHING HEAD-ON IN THE OPPOSITE DIRECTION. CTLR ISSUED A TA.
Narrative: B727, WAS ON DOWNWIND LEG ABEAM FLL. DUE TO WX, ACFT ASKED FOR LOWER ALT. LOWEST ALT AVAILABLE WAS 2000 FT. APPROX 20 MI E OF ARPT ACFT WAS GIVEN A L TURN TO 270 DEGS TO JOIN FINAL. SEVERAL OTHER XMISSIONS WERE MADE TO OTHER ACFT. WHEN I WAS ISSUING APCH CLRNC TO B727, I THEN OBSERVED VFR TFC, AND ISSUED A TFC CALL IMMEDIATELY 12 O'CLOCK, 2 MI, EBOUND AT 1700 FT, TYPE UNKNOWN. B727, DIDN'T SEE ACFT. HE RESPONDED THAT HE HAD JUST HAD A NEAR MISS. I BELIEVE THIS SIT IS CAUSED BY 3 FACTORS: WX CAUSING USE OF NON-STANDARD ALTS AND RTES FOR ARR TFC. THE VFR ACFT FLYING ON THE APCH COURSE, OPPOSITE DIRECTION TO LEVEL OF TFC, NOT USING FLT FOLLOWING OR JUDGEMENT ON HIS CHOICE OF RTING. MY INACTION AS CTLR TO ISSUE AN IMMEDIATE CLB TO B727, ONCE THE VFR TFC WAS OBSERVED.
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.