Date: 202012
Local time of day: 1801-2400
Location: ZZZ.Tower, US
Aircraft: Commercial Fixed Wing
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Initial Approach
Airspace: Class B ZZZ
ATC / advisory: Tower ZZZ
Second aircraft: Any Unknown or Unlisted Aircraft Manufacturer
Reporter organization: Air Carrier
Reporter function: Pilot Flying; Captain
Reporter qualification: Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Human factors: Situational Awareness; Distraction
Anomaly: Conflict Airborne Conflict; Deviation - Altitude Overshoot; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Unstabilized Approach
Detector: Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Air Traffic Control Issued New Clearance; Flight Crew Returned To Clearance; Flight Crew Executed Go Around / Missed Approach
Contributing factors: Environment - Non Weather Related; Human Factors
Primary problem: Environment - Non Weather Related

Narrative: While on a visual approach to [Runway] XXR; I was the PF. I hadn't flown in a month and a half or so; and the weather was conducive to trying to practice skills; so I turned off the AP/AT/FD. While over the ZZZ1 area; we received an RA directing me to level off. After complying with the RA; I began to descend to catch up to the approach; but at the altitude I was at; and the descent rate required to get back on the approach; I would not have been able to do so within stabilized approach criteria; so I conducted a go-around.The go-around was not smooth; and left room for improvement; but all call outs were made; and the checklists were accomplished. After passing through about 1;300 feet or so; we were assigned an altitude of 2;000 feet. The FO selected 2;000 feet and made the comment that we were about 700 feet away. We were climbing at a high rate as we were in TOGA (Still no AP/AT); and I was trying to get the plane slowed down; and arresting the climb rate; the FD began to turn to follow the missed approach for the ILS; as we had loaded it as the backup. We had yet received instruction as to what direction to turn; since we were assigned the visual approach. Between the FD turning and leveling off; it was at this point that I was focused on wanting the aircraft to continue straight on runway heading; and I flew through the 2;000 feet restriction; to my recollection by about 300 feet. The PM attempted to get some sort of instruction from ATC as to what they would like us to do; but struggled to get a word in on the radio. Finally they called and assigned us a vector. They also said since we went past 2;000; to level off at 2;500 feet. At this point; we had a moment; and was able to match up the information on the PFD with what I was wanting; and was able to add back in the AP/AT.This event felt like a culmination of a few problems. The root cause is that I; as the Captain; wasn't as prepared as I should have been. Having flown so little the last few months after upgrade sign off in month; I have been limited to just XX hours of total flying since month; my skill upkeep has been mainly book studying. While this is important; it does not replace being behind the controls of an aircraft.




Synopsis: Air carrier Captain reported an unstabilized approach leading to a go-around; which then resulted in an altitude deviation. The Captain cited lack of flying as a contributing factor.