Accident: Bell 407
Mar 3, 2019 · Union Center, SD
NTSB numberCEN19LA092Event id20190303X31449
- 0
- Fatalities
- 0
- Serious injuries
- 1
- Minor injuries
- 2
- Uninjured
Probable cause
The ambulance driver’s failure to see the helicopter’s rotating main rotor blades in dark night conditions, which resulted in the ambulance’s inadvertent collision with the helicopter. Contributing to the accident was the ambulance driver's failure to follow procedures when approaching the helicopter.
Source: National Transportation Safety Board. Record last changed Oct 28, 2026, 10:54 UTC.
Aircraft involved
- Aircraft
- Bell 407
- Registration
- N450AM
- Year built
- 2013
- Category
- Helicopter
- Damage
- Substantial
- Operating rules
- Part 135: commuter and on-demand
- Defining event
- Standing-engine(s) shutdown Ground collision
Source: National Transportation Safety Board aviation accident database. Counts only; Voydar holds no names.
This page restates the NTSB's public record. Injury figures are counts; Voydar does not hold or publish the names of anyone involved.