Narrative:

As I was preparing to land; a target was showing up on the TCAS on descent into ehr; I thought it was another plane; but it was not broadcasting. I tried to contact it with no response. I was able to activate the pilot controlled lighting on the CTAF; so I know [I] was tuned in to the right frequency. There was a helicopter on the ground when we landed.we unloaded some things. I announced my intentions to takeoff on the CTAF. There was no response. Shortly after I departed; a helicopter suddenly popped up within 200 feet of my plane. The helicopter was flying in the same direction as me parallel to my aircraft. I turned quickly to the right and continued climbing to create more distance between me and the helicopter. I tried contacting it on CTAF; but there was no answer. I never got a response from it. It did not register on my TCAS.

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Original NASA ASRS Text

Title: Pilot of a small aircraft departing an uncontrolled airport reported a near miss with a helicopter departing at the same time.

Narrative: As I was preparing to land; a target was showing up on the TCAS on descent into EHR; I thought it was another plane; but it was not broadcasting. I tried to contact it with no response. I was able to activate the pilot controlled lighting on the CTAF; so I know [I] was tuned in to the right frequency. There was a helicopter on the ground when we landed.We unloaded some things. I announced my intentions to takeoff on the CTAF. There was no response. Shortly after I departed; a helicopter suddenly popped up within 200 feet of my plane. The helicopter was flying in the same direction as me parallel to my aircraft. I turned quickly to the right and continued climbing to create more distance between me and the helicopter. I tried contacting it on CTAF; but there was no answer. I never got a response from it. It did not register on my TCAS.

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.