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Air carrier medium large transport on vector for visual approach has near midair collision with large transport. ATC error admitted.
| Attributes | |
| ACN | 157094 |
| Time | |
| Date | 199009 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : iah |
| State Reference | TX |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 16000 flight time type : 3000 |
| ASRS Report | 157094 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac |
| Independent Detector | atc equipment other atc equipment : unspecified other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 450 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
At approximately XA30 local time, while on approach control, we were cleared direct to the iah and expect a visibility approach to runway 14R. We received further clearance to descend to 2000'. As we were passing through 3000' we received further clearance to maintain 3000' and turn left to 080 degrees. Present heading was approximately 125 degrees. As I leveled off and started the turn an large transport appeared directly in front of us descending in a right turn. (Estimated miss in ft: 0' vertical, 500' horizontal). I took evasive action and west/O it I feel sure that we would have had a midair collision. While both aircraft were maneuvering the approach controller told us to switch to the tower. A normal landing followed. As soon as I was on the ground I contacted the approach control supervisor and asked him what had happened. He responded, 'we lost control.' he then put me on hold and another supervisor that was relieving him came on the line. I asked him to make sure the tapes would be saved, and he assured me that they would be. I then gave him a short brief on what had happened and then notified the dispatch duty officer.
Original NASA ASRS Text
Title: ACR MLG ON VECTOR FOR VISUAL APCH HAS NMAC WITH LGT. ATC ERROR ADMITTED.
Narrative: AT APPROX XA30 LCL TIME, WHILE ON APCH CTL, WE WERE CLRED DIRECT TO THE IAH AND EXPECT A VIS APCH TO RWY 14R. WE RECEIVED FURTHER CLRNC TO DSND TO 2000'. AS WE WERE PASSING THROUGH 3000' WE RECEIVED FURTHER CLRNC TO MAINTAIN 3000' AND TURN LEFT TO 080 DEGS. PRESENT HDG WAS APPROX 125 DEGS. AS I LEVELED OFF AND STARTED THE TURN AN LGT APPEARED DIRECTLY IN FRONT OF US DSNDING IN A RIGHT TURN. (ESTIMATED MISS IN FT: 0' VERT, 500' HORIZ). I TOOK EVASIVE ACTION AND W/O IT I FEEL SURE THAT WE WOULD HAVE HAD A MIDAIR COLLISION. WHILE BOTH ACFT WERE MANEUVERING THE APCH CTLR TOLD US TO SWITCH TO THE TWR. A NORMAL LNDG FOLLOWED. AS SOON AS I WAS ON THE GND I CONTACTED THE APCH CTL SUPVR AND ASKED HIM WHAT HAD HAPPENED. HE RESPONDED, 'WE LOST CTL.' HE THEN PUT ME ON HOLD AND ANOTHER SUPVR THAT WAS RELIEVING HIM CAME ON THE LINE. I ASKED HIM TO MAKE SURE THE TAPES WOULD BE SAVED, AND HE ASSURED ME THAT THEY WOULD BE. I THEN GAVE HIM A SHORT BRIEF ON WHAT HAD HAPPENED AND THEN NOTIFIED THE DISPATCH DUTY OFFICER.
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.