| Airframe History: | ||
| Date: | Tailnumber: | Owner / Operator: |
| MAR 1996 | N91164 | MD Helicopters, Mesa, Arizona |
| APR 1996 | N954SD | Los Angeles County Sheriff's Department, Monterey Park, California |
| JUN 2004 | N954SD | Corbett Aviation Inc, Wilmington, Delaware |
| MAY 2005 | N954SD | Aviation Advantage LLC, Tabor City, North Carolina |
| FEB 2006 | N954SD | Triangle Grading Contractors Inc, Durham, North Carolina |
| APR 2006 | N451WT | Triangle Grading Contractors Inc, Durham, North Carolina |
| JUN 2008 | N451WT | for sale by Wayne Thompson Jr, Durham, North Carolina [ttaf:6900] |
| JUL 2008 | N451WT | Allan Riggs Rock, Sevierville, Tennessee |
| xxx 2008 | N451WT | Operated by Summit Helicopters, California |
| FEB 2018 | N451WT | regi canx. airframe wfu. |