Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Communication Breakdown
ATC Issue All Types; Aircraft Equipment Problem Less Severe; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; General Flight Cancelled / Delayed
Aircraft; Procedure
On short final into ZZZ; Tower told us to go around; it was an unexpected clearance and in the process I thought I had reengaged the Autopilot but had not; and did not call for Go around flaps fast enough to keep the aircraft from over speeding the flaps by about 7 knots.  Had I engaged the autopilot or pulled the power back from the TOGA (Takeoff Go Around) setting the issue would not have occurred.  After being vectored around Tower informed us that they had a false indication of a vehicle or other object entering the runway area.  I attempted to submit this [Report] a few days after the incident when it was fresh in my mind; but I used the Company app and after having several issues; I thought it submitted but only realized it didn't submit when I received notification from the [Report] committee.Refreshing Go around procedures more often and verifying that the autopilot is engaged.
First Officer reported not reengaging the autopilot on a go around; resulting in a flap overspeed.