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Sct TRACON controller reported a read back error that resulted in an aircraft descending below the minimum vectoring altitude.
| Attributes | |
| ACN | 1634505 |
| Time | |
| Date | 201904 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | SCT.TRACON |
| State Reference | CA |
| Aircraft 1 | |
| Make Model Name | Gulfstream V / G500 / G550 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 7.5 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Excursion From Assigned Altitude Deviation - Altitude Overshoot Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
On initial contact we reduced aircraft X's speed then descended them to 063. They read back 036 and we missed it as a training team. They checked on to tustin descending to 036 and they missed it as well. The pilot descended into the MVA and we lost separation with the MVA. We need to pay attention to the pilot read back.
Original NASA ASRS Text
Title: SCT TRACON Controller reported a read back error that resulted in an aircraft descending below the Minimum Vectoring Altitude.
Narrative: On initial contact we reduced Aircraft X's speed then descended them to 063. They read back 036 and we missed it as a training team. They checked on to Tustin descending to 036 and they missed it as well. The pilot descended into the MVA and we lost separation with the MVA. We need to pay attention to the pilot read back.
Data retrieved from NASA's ASRS site 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.