Narrative:

I was conducting a training flight with a primary student preparing him for solo flight. My student advised ground control our flight would be conducted in the pattern at cys (class D). The student contacted cys tower and was cleared for takeoff runway 31. Upon our initial climb; ATC instructed us to enter a right downwind for runway 27. My student acknowledged the instructions from ATC and began a right turn after reaching 500 ft. AGL.at 500 ft. AGL during the turn inbound to return to the right downwind for runway 27 we were approximately 2 miles from the airport. During the turn inbound I heard ATC clear another aircraft for takeoff from runway 27. This aircraft advised he was doing an east departure. I observed the aircraft take off from runway 27 and fly what appeared to be runway heading. My student and I were still heading back to the right downwind leg at approximately 800 ft. AGL and climbing. I asked the student to lower the nose of the aircraft a bit to keep visual contact of the departing aircraft. I noticed the relative movement of the aircraft departing to stop.at this time we were beginning our left turn into the right downwind for runway 27. The aircraft appeared to become larger with no movement. I immediately took the controls from my student and performed a steep right turn to the west to avoid a collision. The other airplane passed to the left of us approximately 150 ft. To the east of my location. I reported the near miss to ATC.ATC inquired why I was on a right downwind for runway 31. I advised I was returning to the pattern for runway 27 as instructed. ATC advised they thought I was going to perform a wide pattern. ATC did question the pilot of the other airplane about if he saw us before he began to turn. The other pilot responded on the radio that he saw me as I was turning west. I contacted ATC upon landing and spoke with the controller about the situation. The controller advised he had a trainee on the radio. The controller further advised the other airplane was a baron and he would speak with the other pilot about the incident.

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Original NASA ASRS Text

Title: Instructor pilot reported a miscommunication with ATC during pattern work; resulting in an NMAC.

Narrative: I was conducting a training flight with a primary student preparing him for solo flight. My student advised Ground Control our flight would be conducted in the pattern at CYS (Class D). The student contacted CYS Tower and was cleared for takeoff Runway 31. Upon our initial climb; ATC instructed us to enter a right downwind for Runway 27. My student acknowledged the instructions from ATC and began a right turn after reaching 500 ft. AGL.At 500 ft. AGL during the turn inbound to return to the right downwind for Runway 27 we were approximately 2 miles from the airport. During the turn inbound I heard ATC clear another aircraft for takeoff from Runway 27. This aircraft advised he was doing an east departure. I observed the aircraft take off from Runway 27 and fly what appeared to be runway heading. My student and I were still heading back to the right downwind leg at approximately 800 ft. AGL and climbing. I asked the student to lower the nose of the aircraft a bit to keep visual contact of the departing aircraft. I noticed the relative movement of the aircraft departing to stop.At this time we were beginning our left turn into the right downwind for Runway 27. The aircraft appeared to become larger with no movement. I immediately took the controls from my student and performed a steep right turn to the west to avoid a collision. The other airplane passed to the left of us approximately 150 ft. to the east of my location. I reported the near miss to ATC.ATC inquired why I was on a right downwind for Runway 31. I advised I was returning to the pattern for Runway 27 as instructed. ATC advised they thought I was going to perform a wide pattern. ATC did question the pilot of the other airplane about if he saw us before he began to turn. The other pilot responded on the radio that he saw me as I was turning west. I contacted ATC upon landing and spoke with the Controller about the situation. The Controller advised he had a trainee on the radio. The Controller further advised the other airplane was a Baron and he would speak with the other pilot about the incident.

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.