 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Enroute controller experienced a loss of separation at FL370 during weather deviations while attempting to use vectors in lieu of altitude with two conflicting aircraft.
| Attributes | |
| ACN | 839859 |
| Time | |
| Date | 200906 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Non Radar 23.5 Air Traffic Control Radar 22.5 Air Traffic Control Time Certified In Pos 1 (mon) 6 Air Traffic Control Time Certified In Pos 1 (yrs) 9 Flight Crew Total 5 |
| Events | |
| Anomaly | ATC Issue All Types |
| Miss Distance | Horizontal 24540 Vertical 400 |
Narrative:
Aircraft 1 was deviating for weather requesting a climb from FL370 to FL390. Aircraft 2 was in level flight at FL380 turned 30 degrees right for enroute spacing. I issued FL390 to aircraft 1 and immediately realized the error in my decision. Rather than re-clear aircraft 1 to FL370; I thought I could resolve the situation with turns. I was unable to maintain separation. In hindsight; I should have re-cleared aircraft 1 to FL370 and separation would not have been lost. I did not take enough time to properly evaluate the request/situation prior to issuing FL390 to aircraft 1.
Original NASA ASRS Text
Title: Enroute Controller experienced a loss of separation at FL370 during weather deviations while attempting to use vectors in lieu of altitude with two conflicting aircraft.
Narrative: Aircraft 1 was deviating for weather requesting a climb from FL370 to FL390. Aircraft 2 was in level flight at FL380 turned 30 degrees right for enroute spacing. I issued FL390 to Aircraft 1 and immediately realized the error in my decision. Rather than re-clear Aircraft 1 to FL370; I thought I could resolve the situation with turns. I was unable to maintain separation. In hindsight; I should have re-cleared Aircraft 1 to FL370 and separation would not have been lost. I did not take enough time to properly evaluate the request/situation prior to issuing FL390 to Aircraft 1.
Data retrieved from NASA's ASRS site as of April 2012 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.