Small Aircraft
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1.0
Confusion; Situational Awareness; Communication Breakdown
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Separated Traffic; Air Traffic Control Issued New Clearance; Flight Crew Became Reoriented
Airspace Structure; Procedure; Human Factors
Aircraft X was cleared for ILS 6 approach to TEB. Shortly after; I noticed him go through the localizer and called the Tower to give instructions to rejoin approach. At the same time I received a low altitude alert and told the Tower. I called Tower to alert them because it appeared to me he might be heading toward their airport. Shortly after it appeared he was turning west bound towards Aircraft Y and at some point I heard the Tower say over the shout line that he wasn't following instructions. I turned Aircraft Y northwest to try to get away from Aircraft X. To me it looked like Aircraft X was headed right at Aircraft Y so I climbed Aircraft Y to 3;000 feet since I told Tower to have Aircraft X climb to 2;000 feet. This vector brought Aircraft Y into conflict with Aircraft Z. Once it appeared Aircraft Y and Aircraft X were no longer a factor I turned Aircraft Y back to a 340 heading away from Aircraft Z. Separation was re-established between all Aircraft and they were re-sequenced to the airport.If Aircraft X had flown the approach as cleared or been issued the 030 heading to rejoin that I initially issued to the Tower; this would have never happened. I was worried about Aircraft Y and Aircraft X hitting which caused me to turn Aircraft Y into Aircraft Z. In hindsight I could have probably used less of a turn for Aircraft Y so that I would have at least had divergence with Aircraft Z; but at the time was more concerned about Aircraft Y and Aircraft X actually hitting that the loss of separation with Aircraft Z seemed less critical so I can't say I wouldn't do the same thing in the future. As I discussed with my supervisor after the incident the one thing I would do differently is not ship Aircraft X to the Tower so soon. It may not have prevented the incident but may have helped make it easier to control if I didn't have to coordinate with the Tower and was directly talking to the aircraft.
I was cleared for the approach for Runway 06 in TEB. I had the incorrect localizer frequency in my GPS and thought I had the airport visually but saw the incorrect airport. I was given a heading to hold and a new altitude. I followed air traffic's new headings and altitudes and realized the wrong frequency was in. I put the correct frequency in and was re-cleared for the approach. During this there was a near miss and another aircraft had to circle to re-shoot his approach. When I landed; Tower asked me to call the TRACON which I did and a report was filed for this incident. It was VFR conditions and I should have double checked frequency before thinking I had the field since there are so many airports close by TEB.
N90 TRACON Controller and pilot reported the pilot flew through approach course and towards another aircraft before pilot was reoriented and communications restored.