Dash 8 Series Undifferentiated or Other Model
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 2.0
Confusion; Situational Awareness; Training / Qualification
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Aircraft; Human Factors; Procedure
I had a heavy jet join the localizer at 5;000 feet and based Aircraft X behind it at 4;000 feet to keep him below the wake turbulence. I turned Aircraft X to join the localizer for the parallel runway. Instead of waiting until Aircraft X was established on the localizer I cleared the Heavy aircraft for the approach. I should have waited just a little bit longer or kept Aircraft X on a divergent heading. I also could have descended Aircraft X sooner and then cleared the Heavy.
S46 TRACON Controller turned an aircraft on to the final approach course with less than required wake turbulence separation behind the preceding Heavy aircraft.