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An MD80 flight crew has near midair collision with another MD80 tat flew through the localizer of the parallel final approach course.
| Attributes | |
| ACN | 587993 |
| Time | |
| Date | 200306 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : stl.airport |
| State Reference | MO |
| Altitude | msl single value : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : t75.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer only : 12l |
| Route In Use | approach : instrument non precision |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : t75.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 12r |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 587993 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne critical non adherence : clearance other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took precautionary avoidance action |
| Miss Distance | vertical : 500 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Being vectored to the lda for runway 12L, we were given an intercept heading and told to descend from 7000 to 3500 ft. As we turned to intercept the lda localizer while descending through 6000 ft, the first officer (PF) noticed an MD80 crossing our path from the south to the north 500 ft below us. He leveled off at 6000 ft about the same time approach control told him to level off. The MD80 had blown through the localizer for runway 12R as well as the lda localizer for runway 12L. If the first officer hadn't seen the MD80 out of his windshield, he certainly could have descended very close.
Original NASA ASRS Text
Title: AN MD80 FLT CREW HAS NMAC WITH ANOTHER MD80 TAT FLEW THROUGH THE LOC OF THE PARALLEL FINAL APCH COURSE.
Narrative: BEING VECTORED TO THE LDA FOR RWY 12L, WE WERE GIVEN AN INTERCEPT HDG AND TOLD TO DSND FROM 7000 TO 3500 FT. AS WE TURNED TO INTERCEPT THE LDA LOC WHILE DSNDING THROUGH 6000 FT, THE FO (PF) NOTICED AN MD80 XING OUR PATH FROM THE S TO THE N 500 FT BELOW US. HE LEVELED OFF AT 6000 FT ABOUT THE SAME TIME APCH CTL TOLD HIM TO LEVEL OFF. THE MD80 HAD BLOWN THROUGH THE LOC FOR RWY 12R AS WELL AS THE LDA LOC FOR RWY 12L. IF THE FO HADN'T SEEN THE MD80 OUT OF HIS WINDSHIELD, HE CERTAINLY COULD HAVE DSNDED VERY CLOSE.
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.