N911FA, a Bell OH-58, was attempting to park on Pad 2 at the Pasadena PD heliport, and N96BM, a Bell OH-58A, was on the ground adjacent to Pad 1 with its main rotor blades turning when the collision occurred.
Pasadena PD operated both helicopters under the provision of 14 Code of Federal Regulations Part 91, as public-use flights. Both helicopters sustained substantial damage.The commercial pilot and two passengers of N911FA received minor injuries. Also, one person on the ground received minor injuries.