Air traffic controller reported descending an aircraft to an altitude below the minimum vectoring al...

Attributes
ACN	1472504
Time
Date	201708
Local Time Of Day	1201-1800
Place
Locale Reference	F11.TRACON
State Reference	FL
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
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) 17.0
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT

Narrative:

I descended an aircraft to 2700 feet. There is an obstruction at 2900 feet but at his rate of descent I always easily clear that antenna. The pilot asked if he was getting down to get under weather and I said no; it was to get under arrivals. Next thing I know he is below the minimum vectoring altitude. I issued 2900 feet but he did not acknowledge. His rate of descent was extremely unusual and unexpected. I think he was hurrying down on his own in hopes of turning toward the airport. I told him I could not turn that close on an instrument approach so he went the long way. I think it would help if pilots told us they were doing a non standard rate of descent. I think I will never anticipate a standard rate again.

Original NASA ASRS Text

Title: Air Traffic Controller reported descending an aircraft to an altitude below the Minimum Vectoring Altitude.

Narrative: I descended an aircraft to 2700 feet. There is an obstruction at 2900 feet but at his rate of descent I always easily clear that antenna. The pilot asked if he was getting down to get under weather and I said no; it was to get under arrivals. Next thing I know he is below the Minimum Vectoring Altitude. I issued 2900 feet but he did not acknowledge. His rate of descent was extremely unusual and unexpected. I think he was hurrying down on his own in hopes of turning toward the airport. I told him I could not turn that close on an instrument approach so he went the long way. I think it would help if pilots told us they were doing a non standard rate of descent. I think I will never anticipate a standard rate again.

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.

Air traffic controller reported descending an aircraft to an altitude below the minimum vectoring altitude.