C172 instructor pilot reported an near midair collision with a cirrus in the southwest practice area...

Attributes
ACN	1595587
Time
Date	201811
Local Time Of Day	1201-1800
Place
Locale Reference	APA.Airport
State Reference	CO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Aircraft 2
Make Model Name	Cirrus Aircraft Undifferentiated
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Person 1
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 200 Flight Crew Total 660 Flight Crew Type 240
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 0 Vertical 150

Narrative:

We were flying in the chatfeld practice box in the southwest practice area at 8;000 feet MSL performing steep turns. We performed our clearing turn and made a radio call on the practice area frequency of 122.75. Upon completion of the first 180 degrees of the steep turn; we found ourselves head-on with a cirrus. The cirrus made no radio call and did not seem to have us in sight. We made an immediate left and turn and descent to avoid a midair collision. The cirrus passed over us by approximately 150-200 feet. The cirrus proceeded to fly through the rest of our practice areas making no radio calls. I made a call over the practice area alerting other pilots of the aircraft; including location; direction of flight; and altitude. The practice area frequency is listed on the denver sectional for both areas. There is no alert area established for this very busy training location.

Original NASA ASRS Text

Title: C172 instructor pilot reported an NMAC with a Cirrus in the Southwest Practice area near APA.

Narrative: We were flying in the Chatfeld Practice box in the Southwest Practice area at 8;000 feet MSL performing steep turns. We performed our clearing turn and made a radio call on the practice area frequency of 122.75. Upon completion of the first 180 degrees of the steep turn; we found ourselves head-on with a Cirrus. The Cirrus made no radio call and did not seem to have us in sight. We made an immediate left and turn and descent to avoid a midair collision. The Cirrus passed over us by approximately 150-200 feet. The Cirrus proceeded to fly through the rest of our practice areas making no radio calls. I made a call over the practice area alerting other pilots of the aircraft; including location; direction of flight; and altitude. The practice area frequency is listed on the Denver sectional for both areas. There is no alert area established for this very busy training location.

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 instructor pilot reported an near midair collision with a cirrus in the southwest practice area near apa.