Any Unknown or Unlisted Aircraft Manufacturer
Air Traffic Control Fully Certified
Communication Breakdown; Workload
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Procedure; Human Factors; Company Policy
I was working the Local 2 position; which entails working Runway 31L off-loaded departures and CBA (VFR/Helicopter Operation in the B). Local 1 is working Runway 4R/L. Aircraft X appears to be vectoring in for Runway 4L and checks in on my frequency; which is the wrong frequency as he should be with Local 1. I switch him to that frequency. He then appears to be disoriented and is overshooting the finals. He's now in conflict with Aircraft Y; an arrival for Runway 4R. Neither of them appear to be Local 1 or the Approach Controller. I double check on my frequency and they aren't on mine either. They finally come up on Local 1 and the Controller separates them both.I recommend that the Approach Controller ensures that aircraft are either established on course and are no longer a factor with other aircraft before switching frequencies because sometimes they go to the wrong frequencies or lose communication and can become a problem; so much so that it can create an accident.
JFK Tower Controller reported an aircraft was using the incorrect frequency during handoff; which resulted in a conflict with another aircraft.