B737 Undifferentiated or Other Model
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 6.0
Situational Awareness
ATC Issue All Types; Airspace Violation All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance
Airspace Structure; Procedure
Aircraft X checked on descending to 6300 feet. I turned the aircraft heading 280 and descended them to 5200 feet. They violated the 6300 foot Minimum Vectoring Altitude (MVA) by 100 feet; and the 5800 foot MVA by 200 feet. My instruction to descend the aircraft to 5200 feet was too soon and resulted in a loss.We previously had a 'step down procedure' for aircraft landing from the east. This allowed us to descend into the MVA between heading 220 clockwise to 320. The first step was 5000 feet; then 4000 feet; then 3000 feet. This was a great tool that allowed us to easily descend aircraft from the east. In the area that I violated by 100 and 200 feet; we were previously authorized to descend to 5000 feet. This tool was taken away from us and it is my recommendation that we bring it back. Bring back the step down procedure for arrivals into from the east.
ATC TRACON Controller reported using a procedure no longer authorized which resulted in vectoring an arriving aircraft below the Minimum Vectoring Altitude.