| Airframe History: | ||
| Date: | Tailnumber: | Owner / Operator: |
| MAR 2010 | N145MH | Keystone Helicopter Corporation, Coatesville, Pennsylvania |
| MAR 2010 | N145MH | Sikorsky Aircraft Corporation, Stratford, Connecticut |
| APR 2011 | N145MH | Bristow US LLC, New Iberia, Louisiana |
| SEP 2011 | LN-ONB | Bristow Norway AS, Stavanger - Sola, Norway |