B757 Undifferentiated or Other Model
Communication Breakdown; Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance
Human Factors
Training; approach procedure; widely spaced weather conditions: IFR; The weather caused for longitudinal compression thus requiring extra spacing on final approach. My trainee vectored a B757 a little too close behind another B757 causing me to concentrate on that scenario and I missed the initial check of an E135 on the frequency. I did not hear the E135's assigned altitude of 3;000; towards the 3;500 MVA. My trainee initiated a frequency change of the B757 to Tower with insufficient wake turbulence spacing. I called Local Control to initiate a go-around. My trainee then noticed the E135 at 3;000 and issued a climb. I then issued an 'expedite climb' to the E135. The audio data indicates that the Feeder Controller assigned the Embraer 5;000 MSL but the pilot read back 3;000.
TRACON Controller providing OJT described an event where they cleared an aircraft to descend below the MVA while distracted by an overtake 'wake' situation on final and then failing to note an incorrect altitude assignment.