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TRACON controller reported that an aircraft descended below their assigned altitude and caused the controller to issue an altitude alert.
| Attributes | |
| ACN | 1691282 |
| Time | |
| Date | 201910 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | CHA.TRACON |
| State Reference | TN |
| Aircraft 1 | |
| Make Model Name | Amateur/Home Built/Experimental |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
Training in progress. Trainee gave pilot a descent from 050 to 040; pilot read back 040. Trainee observed aircraft mode C at 030 in 036 MVA. Trainee issued a low altitude alert and climbed the aircraft to 040. Pilot stated he was assigned 030; trainee replied and told pilot he was assigned 040. 040 was verified and read back by the pilot. Stars equipment did not give a low altitude alert. Trainee or instructor could have recognized the altitude discrepancy sooner. Otherwise; great low altitude alert and recovery was given by trainee.
Original NASA ASRS Text
Title: TRACON Controller reported that an aircraft descended below their assigned altitude and caused the controller to issue an altitude alert.
Narrative: Training in progress. Trainee gave pilot a descent from 050 to 040; pilot read back 040. Trainee observed aircraft Mode C at 030 in 036 MVA. Trainee issued a low altitude alert and climbed the aircraft to 040. Pilot stated he was assigned 030; trainee replied and told pilot he was assigned 040. 040 was verified and read back by the pilot. STARS equipment did not give a low altitude alert. Trainee or Instructor could have recognized the altitude discrepancy sooner. Otherwise; great low altitude alert and recovery was given by trainee.
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.