Caravan Undifferentiated
Air Traffic Control Fully Certified
Situational Awareness; Training / Qualification
ATC Issue All Types; Conflict Ground Conflict; Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued New Clearance
Human Factors
Training in progress; I was allowing the CPC-IT to control the situation. First aircraft had landed on the runway and was rolling out. Second aircraft on short final to same runway; very close behind. AMASS alerted to send second aircraft around. Recommendation; be more aggressive with CPC-IT about making a decision earlier.
Tower Controller providing OJT described a AMASS alert requiring the issuance of a go-around. The reporter acknowledged that instructor intervention was late.