Date: 202002
Local time of day: 0601-1200
Location: GPM.Airport, TX
Flight conditions: VMC
Weather elements / visibility: 10
Light: Daylight
Aircraft: Skyhawk 172/Cutlass 172
Operator: FBO
Operating under: Part 91
Flight plan: IFR
Mission: Training
Flight phase: Initial Approach
Airspace: Class B DFW
ATC / advisory: TRACON D10; Tower GPM
Second aircraft: PA-24 Turbo Comanche
Reporter organization: FBO
Reporter function: Instructor; Pilot Not Flying
Reporter qualification: Flight Crew Commercial; Flight Crew Flight Instructor; Flight Crew Instrument; Flight Crew Multiengine
Human factors: Communication Breakdown; Situational Awareness
Anomaly: ATC Issue All Types; Conflict NMAC
Detector: Automation Aircraft Other Automation; Person Flight Crew
When detected: In-flight
Result: Flight Crew Took Evasive Action
Contributing factors: Human Factors
Primary problem: Human Factors

Narrative: The near miss happened about 2.8 miles from NAWXY on the RNAV 35 approach into GPM. The student and the instructor (myself) were instructed to report the airport in sight about 7 miles southwest from ERGEY on vectors to intercept the RNAV 35. About 4.5 miles from ERGEY the student tried to call Fort Worth Center three times all the way to ERGEY without any response from Approach. (Approach was busy on arrival). As the instructor I changed radios to make sure the Controller could hear us and tried to call Approach (at this time we are already intercepting the RNAV 35 approach). [On] the first attempt still no response (10 miles from GPM); [on] the second attempt I received a response (7.2 mlesi from GPM/ 3.0 NAWXY) we were cleared for the RNAV 35 approach and told to switch to Tower on 128.55. During the switch over I got an alert on my iPad from my Scout ADS-B portable letting me know traffic at 12 o'clock 2 miles same altitude. The student was in the middle of calling Tower. During the Tower's response to let me know I have traffic ahead I had taken controls from the student and turned left to avoid the aircraft I had spotted after the alert. I was roughly 400 ft. or less from the aircraft; enough to see the tail number and pilot clearly as I rolled out on a northerly heading off of the RNAV approach path. After landing I went to [the] Tower and talked to the Controllers to make sense of why the aircraft was heading the opposite direction and same altitude when I was cleared for an IFR approach on an IFR flight plan. The response from the Tower personnel was that the other aircraft was already on with approach with flight following. Tower Manager had called approach to ask to look into the matter.Some contributing factors: 1. Controller was obviously overwhelmed with calls entire time on frequency.2. Controller was not paying attention to my aircraft- I was flying on radar vectors direct to ERGEY at 3000 [and] the Controller did not call out traffic in the pattern right below us; but called the traffic out to an aircraft nowhere near the airport to the north.3. Controller not following my aircraft dumps us off to GPM 2.8 miles from the FAF with no traffic advisories about the multiple aircraft coming out of GKY and GPM from ERGEY to the hand over.




Synopsis: C172 Instructor reported an NMAC with another light aircraft on approach to GPM.