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D01 controller and 737 flight crew reported the aircraft descended from their assigned altitude and flew below the minimum vectoring altitude.
| Attributes | |
| ACN | 1643348 |
| Time | |
| Date | 201905 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | DEN.Airport |
| State Reference | CO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| 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) 15 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 207 Flight Crew Type 9824 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
When the aircraft checked in I descended them to 8000 feet. At the appropriate time I turned them base leg and slowed to 190 knots; vectoring for the visual approach. I scanned my other aircraft and then looked back at aircraft X when I heard the low altitude alert going off. He was at 7000 feet and I was surprised. I should have issued a low altitude alert and climbed him. First thing I thought to do was point out the field and clear him for a visual approach. I told the supervisor and had tower issue the brasher. I should have issued the low altitude alert and should have climbed the plane before issuing the visual approach clearance.
Original NASA ASRS Text
Title: D01 Controller and 737 Flight Crew reported the aircraft descended from their assigned altitude and flew below the Minimum Vectoring Altitude.
Narrative: When the aircraft checked in I descended them to 8000 feet. At the appropriate time I turned them base leg and slowed to 190 knots; vectoring for the Visual Approach. I scanned my other aircraft and then looked back at Aircraft X when I heard the low altitude alert going off. He was at 7000 feet and I was surprised. I should have issued a low altitude alert and climbed him. First thing I thought to do was point out the field and clear him for a visual approach. I told the Supervisor and had Tower issue the brasher. I should have issued the low altitude alert and should have climbed the plane before issuing the Visual Approach clearance.
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.