Date: 201912
Local time of day: 1201-1800
Location: ZZZ.Airport, US
Flight conditions: VMC
Weather elements / visibility: 30
Light: Daylight
Aircraft: Small Aircraft
Operator: Personal
Operating under: Part 91
Flight plan: None
Mission: Training
Flight phase: Initial Approach
Airspace: Class D ZZZ
ATC / advisory: Tower ZZZ
Second aircraft: Small Aircraft
Reporter organization: Personal
Reporter function: Pilot Flying; Instructor
Reporter qualification: Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP)
Human factors: Confusion; Communication Breakdown
Anomaly: Conflict NMAC
Detector: Automation Aircraft TA
When detected: In-flight
Result: Flight Crew Took Evasive Action
Contributing factors: Human Factors
Primary problem: Human Factors

Narrative: Low sun made judging distance from other aircraft difficult when the target was fist pointed out by tower. This should not have been an issue since we were number 1 for landing and the other aircraft was told to follow us.My son and I experienced a near miss in ZZZ airspace. I am asking [the Flight Standards District Office] to look into the incident because; I believe it was due to reckless careless operation regarding Aircraft Y.My son and I were flying Aircraft X. We were returning from a training flight; I; the CFI; and my son the recipient of the training. The days flying began at ZZZ. Our destination was ZZZ1 where we were going to take on fuel; go to lunch and return to ZZZ. My son has a private with approximately 300 flight hours. I was the PIC. I am an ATP and hold multiple other certificates. My CFI is current and I am a retired airline captain. Point is; this is not my first rodeo.We were returning from ZZZ1. Our course line was a direct course from ZZZ1 to ZZZ and we had begun our descent to avoid entering [nearby] Class B airspace. We were VFR. Weather was not an issue as it was CAVU.  My son and I were discussing what entry we could expect. From the ATIS we knew the winds favored RW XX and the ATIS said RW XX was in use. We called ZZZ tower approx. 8 miles north and 3;000 feet. We were cleared in ZZZ airspace and told to expect RW XX. We continued our descent. At the point of first contact with ZZZ tower we were at approximately 3;000 feet. A few seconds after our call to tower Aircraft Y called ZZZ tower. ZZZ Tower told him of our position. ZZZ tower also told us of Aircraft Y's position. We were approximately 3 miles apart and he was at our 2 to 4 O clock.Aircraft Y said he had us in sight and we had him in view also. We also saw his target on our moving map with ADS-B. Tower told us we were Number 1 and told Aircraft Y to follow us and told Aircraft Y he was Number 2. We made a slight left turn to a modified downwind/base. Our focus was on the runway and the approach to landing. I was watching my son closely; his speed and altitude as he needed to slow to configure gear and flaps for landing. I noticed on the moving map that the ADS-B target showed Aircraft Y very close. He was instructed to follow us and last seen he was not a concern. A few seconds later I noticed the ADS-B target was 200 feet right below us. Down and out of the corner of the wing and cowl I saw Aircraft Y below in extremely close proximity. (He looked to be less than 200 feet) I told my son to stop his descent. At that time he also saw the other aircraft directly below us. I said something on the VHF freq regarding the other aircraft's proximity. He was within 200 feet on the ADS-B. I was very upset and had no idea why the pilot of Aircraft Y had gotten so close as I consider this actions a near miss.




Synopsis: Pilot reported a near midair collision on final approach with an aircraft that had been sequenced as Number 2 for landing behind the reporting aircraft.