 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
D10 controller providing OJT described a probable loss of separation event when he/she issued a turn to a T38 that may have conflicted with other traffic because of the wide turn radius.
| Attributes | |
| ACN | 875552 |
| Time | |
| Date | 201002 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | D10.TRACON |
| State Reference | TX |
| Aircraft 1 | |
| Make Model Name | Talon (T38) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Cessna Citation Undifferentiated or Other Model |
| Flight Phase | Descent |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach Instructor |
| Qualification | Air Traffic Control Fully Certified |
| Person 2 | |
| Function | Trainee |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy |
Narrative:
Aircraft Y turning final at ftw 2400 descending. Aircraft X; a T38; departed afw filed west over ferra intersection. Trainee turned the T38 and climbed him to 8000 to avoid an ATR72 off dfw at 4000 southwest bound. There was no loss between the T38 and ATR72; but the T38 slid in the turn and I believe may have gotten withing the 3 mile ring before divergence or vertical was achieved. The maneuver could have worked but (aircraft Y) was cleared for the visual approach at 3500 and actually climbed to 3900 and therefore took much longer to descend. I believe the closest the aircraft got was 2.5 miles or 800 feet. Also; we may have achieved divergence prior to the loss I am reporting. Recommendation; more training and monitoring for the trainee; and more control from the instructor. Sometimes you have to let the trainee work the traffic; and be prepared to take action. The only action that would have prevented this occurrence would have been to cancel out the instruction; but this may have resulted in a much worse situation because the T38; which is usually a training flight; would have started the read back and executing the control instructions and by the time they corrected back and it would have ended up much worse and the ATR72 southwest bound would also have been involved.
Original NASA ASRS Text
Title: D10 controller providing OJT described a probable loss of separation event when he/she issued a turn to a T38 that may have conflicted with other traffic because of the wide turn radius.
Narrative: Aircraft Y turning final at FTW 2400 descending. Aircraft X; a T38; departed AFW filed west over FERRA intersection. Trainee turned the T38 and climbed him to 8000 to avoid an ATR72 off DFW at 4000 southwest bound. There was no loss between the T38 and ATR72; but the T38 slid in the turn and I believe may have gotten withing the 3 mile ring before divergence or vertical was achieved. The maneuver could have worked but (Aircraft Y) was cleared for the visual approach at 3500 and actually climbed to 3900 and therefore took much longer to descend. I believe the closest the aircraft got was 2.5 miles or 800 feet. Also; we may have achieved divergence prior to the loss I am reporting. Recommendation; more training and monitoring for the trainee; and more control from the instructor. Sometimes you have to let the trainee work the traffic; and be prepared to take action. The only action that would have prevented this occurrence would have been to cancel out the instruction; but this may have resulted in a much worse situation because the T38; which is usually a training flight; would have started the read back and executing the control instructions and by the time they corrected back and it would have ended up much worse and the ATR72 southwest bound would also have been involved.
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.