M-20 Series Undifferentiated or Other Model
Air Traffic Control Fully Certified
Training / Qualification; Situational Awareness
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Procedure; Weather; Human Factors
My Developmental departed an IFR BE33 with an IFR M20P on a 2 mile final. The low ceiling prevented us from visually observing the M20P. The M20P did not have the field in sight and executed a missed approach. The BE33 and M20P ended up two miles apart laterally and 300 FT vertically. I was well aware of the low ceiling and the unusually high altitude of the inbound M20P. I should not of have permitted my Developmental to depart the BE33 in this situation; especially without having the M20P in sight to provide visual separation. Proper application of the visual separation rules would have prevented this situation from happening. Making my Developmental more aware of the situation and likelihood of the succeeding aircraft to execute a missed approach may have prevented him from departing the BE33.
Tower Controller providing OJT described a loss of separation between an IFR arrival and an IFR departure when the final traffic executed a missed approach due to weather.