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A tracon controller observed an aircraft descend below its assigned altitude and below the minimum vectoring altitude.
| Attributes | |
| ACN | 1399697 |
| Time | |
| Date | 201611 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | PWM.TRACON |
| State Reference | ME |
| Aircraft 1 | |
| Make Model Name | Small Aircraft |
| 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 |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 6 |
| Events | |
| Anomaly | Airspace Violation All Types Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
I told aircraft X to descend at pilot discretion and to maintain 4;000 feet. [The pilot] read it back but contained descent through 3;000 feet violating a minimum vectoring altitude. [The pilot] was more than 3 miles from the highest depicted obstruction and above the next highest minimum vectoring altitude when I saw him descending I stopped his descent at 2500 feet.
Original NASA ASRS Text
Title: A Tracon Controller observed an aircraft descend below its assigned altitude and below the Minimum Vectoring Altitude.
Narrative: I told Aircraft X to descend at pilot discretion and to maintain 4;000 feet. [The pilot] read it back but contained descent through 3;000 feet violating a Minimum Vectoring Altitude. [The pilot] was more than 3 miles from the highest depicted obstruction and above the next highest Minimum Vectoring Altitude when I saw him descending I stopped his descent at 2500 feet.
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.