C172 instructor pilot reported a near midair collision with another cessna in the vicinity of eln VO...

Attributes
ACN	1440776
Time
Date	201704
Local Time Of Day	0601-1200
Place
Locale Reference	ELN.Airport
State Reference	WA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct Airway V2
Flight Plan	VFR
Aircraft 2
Make Model Name	Cessna Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Person 1
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Instrument Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 120 Flight Crew Total 903 Flight Crew Type 600
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 500 Vertical 200

Narrative:

Tracking outbound 055 radial from the eln VOR; at about 12 NM and at 7500 MSL; my student and I encountered traffic inbound on the same radial; same altitude. My student spotted the other aircraft (red and white cessna; possibly a 182 with retractable gear; was able to see the pilots face but unable to get the tail number); banked right and climbed instantly; missing the other aircraft by about 500 ft horizontal and 200 ft vertical. No radio calls from other aircraft on CTAF (123.0). We had made frequent radio calls departing the ellensburg; wa valley stating we were at 7500 MSL outbound on the 055 radial (victor 2 airway) with distance reports along the way. Had my student not done what he had; we would likely have had a midair collision. When the other aircraft was spotted; we were at most a half mile away. No effort to avoid a collision was made by the other aircraft; and was unable to get in touch with them on the ellensburg CTAF on 123.0.

Original NASA ASRS Text

Title: C172 instructor pilot reported a NMAC with another Cessna in the vicinity of ELN VOR.

Narrative: Tracking outbound 055 radial from the ELN VOR; at about 12 NM and at 7500 MSL; my student and I encountered traffic inbound on the same radial; same altitude. My student spotted the other aircraft (Red and White Cessna; possibly a 182 with retractable gear; was able to see the pilots face but unable to get the tail number); banked right and climbed instantly; missing the other aircraft by about 500 ft horizontal and 200 ft vertical. No radio calls from other aircraft on CTAF (123.0). We had made frequent radio calls departing the Ellensburg; WA valley stating we were at 7500 MSL outbound on the 055 radial (Victor 2 Airway) with distance reports along the way. Had my student not done what he had; we would likely have had a midair collision. When the other aircraft was spotted; we were at most a half mile away. No effort to avoid a collision was made by the other aircraft; and was unable to get in touch with them on the Ellensburg CTAF on 123.0.

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 a near midair collision with another cessna in the vicinity of eln VOR.