GA pilot reported a near midair collision with a helicopter doing hover work on the runway during ta...

Attributes
ACN	1589358
Time
Date	201810
Local Time Of Day	0601-1200
Place
Locale Reference	CPM.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Route In Use	None
Flight Plan	None
Person 1
Function	Single Pilot
Qualification	Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 10 Flight Crew Total 2775 Flight Crew Type 1430
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 100 Vertical 50

Narrative:

I waited for a helicopter to land. After it did and it was no longer visible on the runway; I announced my takeoff; taxied on the runway; and started my takeoff run. The helicopter was still at the far end of the runway; apparently practicing hovering; and had not been apparent to me. [Due to the paint color; it] disappeared in the background clutter. I climbed away to the left and it veered off to the right.helicopters are asked not to hover taxi on the runways; but they do. When done at the far end of a 3;300-foot runway they are difficult to see against the background. In this case; I should have repeated my calls and specifically asked for verification that the helicopter was clear of the runway.

Original NASA ASRS Text

Title: GA pilot reported a NMAC with a helicopter doing hover work on the runway during takeoff at CPM non-towered field.

Narrative: I waited for a helicopter to land. After it did and it was no longer visible on the runway; I announced my takeoff; taxied on the runway; and started my takeoff run. The helicopter was still at the far end of the runway; apparently practicing hovering; and had not been apparent to me. [Due to the paint color; it] disappeared in the background clutter. I climbed away to the left and it veered off to the right.Helicopters are asked not to hover taxi on the runways; but they do. When done at the far end of a 3;300-foot runway they are difficult to see against the background. In this case; I should have repeated my calls and specifically asked for verification that the helicopter was clear of the runway.

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.

GA pilot reported a near midair collision with a helicopter doing hover work on the runway during takeoff at cpm non-towered field.