 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
C90 reported a probable loss of separation event when two air carriers being vectored for parallel runways; one with equipment issues; failed to properly acknowledge a 'maintain visual separation' instruction.
| Attributes | |
| ACN | 1056210 |
| Time | |
| Date | 201212 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | C90.TRACON |
| State Reference | IL |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy |
Narrative:
I was vectoring air carrier X to runway 9R. I was told to follow air carrier Y who was being vectored on a 360 heading by another controller to runway 10 (a parallel runway that is not far enough apart from 9R to run simultaneous approaches without monitors.) I was on a heading to pass behind and follow air carrier Y. Air carrier Y had equipment issues that wasn't going to let it taxi off the runway upon landing. When the other controller told air carrier Y to turn to a 070 heading to join the localizer; the pilot told her that he was not yet ready to land. The other controller then turned air carrier Y to the right to a heading of 120. The pilot read this turn back but didn't take it. She then turned him right to a heading of 180. The pilot read this turn back as well but didn't state that he was making a right turn. Air carrier Y appeared to be in a left turn when the pilot asked the other controller to verify that he was supposed to be in a left turn to a 180 heading. At this point I and the other controller tried to get both aircraft to report the other in sight. Both aircraft reported the traffic in sight; but when told to maintain visual separation air carrier Y didn't reply with a call sign and air carrier X didn't reply at all. I feel that if the pilot had done what he was instructed to do there would not have been a loss of separation.
Original NASA ASRS Text
Title: C90 reported a probable loss of separation event when two air carriers being vectored for parallel runways; one with equipment issues; failed to properly acknowledge a 'maintain visual separation' instruction.
Narrative: I was vectoring Air Carrier X to Runway 9R. I was told to follow Air Carrier Y who was being vectored on a 360 heading by another Controller to Runway 10 (a parallel runway that is not far enough apart from 9R to run simultaneous approaches without monitors.) I was on a heading to pass behind and follow Air Carrier Y. Air Carrier Y had equipment issues that wasn't going to let it taxi off the runway upon landing. When the other Controller told Air Carrier Y to turn to a 070 heading to join the localizer; the pilot told her that he was not yet ready to land. The other Controller then turned Air Carrier Y to the right to a heading of 120. The pilot read this turn back but didn't take it. She then turned him right to a heading of 180. The pilot read this turn back as well but didn't state that he was making a right turn. Air Carrier Y appeared to be in a left turn when the pilot asked the other Controller to verify that he was supposed to be in a left turn to a 180 heading. At this point I and the other Controller tried to get both aircraft to report the other in sight. Both aircraft reported the traffic in sight; but when told to maintain visual separation Air Carrier Y didn't reply with a call sign and Air Carrier X didn't reply at all. I feel that if the pilot had done what he was instructed to do there would not have been a loss of separation.
Data retrieved from NASA's ASRS site as of July 2013 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.