Widebody; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 3
Training / Qualification
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance
Procedure; Human Factors; Environment - Non Weather Related
Training in progress on Approach; Arrival; and Departure in the TRACON with a stand-alone supervisor. Aircraft X had just completed a test approach to Runway XX with climb out instructions to fly heading 090 and climb to 3;000 for radar vectors to the RNAV Runway XY approach. At the same time Aircraft Y was inbound for Runway XY on a visual approach. The trainee attempted to vector Aircraft X north; behind Aircraft Y; toward ZZZZZ for the approach and was unaware of the 4;000 MVA he was turning Aircraft X into.I attempted to turn Aircraft X left to a heading of 310 to avoid the MVA and attempted to climb them to 4;000. Aircraft X did not make the turn in time and entered the 4;000 MVA at 3;000 by approximately 1 mile; Aircraft X was not vectored again until they reached 4;000. My technique in this situation is to always vector aircraft for RNAV approaches at 4000 in case they come close to the 4;000 MVA. I explained this to the trainee and they will do the same in the future.
TRACON Instructor reported an aircraft entered a MVA at a lower than required altitude.