| Date: | October 25, 1991 |
| Location: | Vallejo, California |
| Aircraft: | Bell 206B helicopter |
| Reg: | N3456M |
| Airline: | Corporate Mobility Inc. |
| Flight No: | N/A |
| Fatalities: | 3 : 3 |
| The wreckage of the helicopter in which rock promoter Bill Graham was killed after it hit a transmission tower after taking off in high winds and heavy rain. |