Narrative:

During preflight the mechanic was in cockpit still doing his work. I visually verified that the right cowling was locked but did not physically verify. After mechanic finished I continued my paperwork check and started the aircraft. When I was 200 ft. Airborne; the cowling started to open partially. I requested to return to the runway and land without declaring an emergency. I was distracted which caused an interruption of flow during preflight. I called dispatch; director of maintenance and director of operations to inform them of the situation. I should preflight thoroughly and avoid distractions. If interrupted; start over and verify with check list.

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Original NASA ASRS Text

Title: C208 Pilot reported the right cowling partially opened after takeoff.

Narrative: During preflight the Mechanic was in cockpit still doing his work. I visually verified that the right cowling was locked but did not physically verify. After Mechanic finished I continued my paperwork check and started the aircraft. When I was 200 ft. airborne; the cowling started to open partially. I requested to return to the runway and land without declaring an emergency. I was distracted which caused an interruption of flow during preflight. I called Dispatch; Director of Maintenance and Director of Operations to inform them of the situation. I should preflight thoroughly and avoid distractions. If interrupted; start over and verify with check list.

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.