C172 flight instructor reported a near midair collision [near miss airborne conflict] with following...

Attributes
ACN	1677871
Time
Date	201908
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Flight Plan	VFR
Aircraft 2
Make Model Name	Skywagon 185
Operating Under FAR Part	Part 91
Flight Phase	Landing
Person 1
Function	Pilot Flying Instructor
Qualification	Flight Crew Commercial Flight Crew Flight Instructor Flight Crew Instrument
Experience	Flight Crew Last 90 Days 150 Flight Crew Total 1100 Flight Crew Type 700
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 100 Vertical 50

Narrative:

While doing pattern work at ZZZ; we (aircraft X) noticed an aircraft on our TCAS system perform a pattern entry directly across the departure end of runway 20 (the runway in use at the time) at approximately pattern altitude. We spotted that aircraft visually and verified their altitude and location. That aircraft proceeded to fly their downwind between 100-200 yards behind us. We slowed down on downwind and then elected to extend downwind for an aircraft performing a practice ILS approach. The skywagon (aircraft Y; confirmed with ads-B and audibly on CTAF); lost visual separation with us and turned base nearly on top of us; after slightly widening out their downwind. We evaded each other and then continued pattern work.

Original NASA ASRS Text

Title: C172 flight instructor reported a NMAC [Near Miss Airborne Conflict] with following traffic which failed to maintain visual separation in traffic pattern.

Narrative: While doing pattern work at ZZZ; we (Aircraft X) noticed an aircraft on our TCAS system perform a pattern entry directly across the departure end of Runway 20 (the runway in use at the time) at approximately pattern altitude. We spotted that aircraft visually and verified their altitude and location. That aircraft proceeded to fly their downwind between 100-200 yards behind us. We slowed down on downwind and then elected to extend downwind for an aircraft performing a practice ILS approach. The Skywagon (Aircraft Y; confirmed with ADS-B and audibly on CTAF); lost visual separation with us and turned base nearly on top of us; after slightly widening out their downwind. We evaded each other and then continued pattern work.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

C172 flight instructor reported a near midair collision [near miss airborne conflict] with following traffic which failed to maintain visual separation in traffic pattern.