John R. Yannaccone, P.E.
Principal Mechanical Engineer

John R. Yannaccone, P.E. has been an engineer for over 25 years. For over 20 of those years, he has worked in the forensic engineering field. Most of his work has been related to the investigation and analysis of mechanical failures of various industrial and consumer products. John’s expertise extends to the investigation and analysis of industrial equipment, household appliances and tools, forklifts, ladders, fall protection, machine guards, ropes course elements, wheelchair lifts and occupant restraints, patient lifts, tree stands along with other consumer products. Much of his work has been in the field of occupant protection, primarily in motor vehicles, including child safety seats, seatbelts, seatbacks, airbags and restraint systems.


John earned his degree in mechanical engineering from Drexel University in 1989. With a focus on mechanical defects, failure analysis and general system safety, John’s expertise extends to the investigation and analysis of alleged mechanical failures of products including industrial equipment, consumer products, child safety seats, seatbelts, seatbacks, restraint systems, occupant restraints, wheelchair and patient lifts, lawnmowers, and ladders. John has over 25 years of experience in forensic investigations for the legal and insurance industries and has been involved with all aspects of investigation, research and product testing for various branches of the government, as well as private companies.


John is a registered professional engineer in several states and is also a member of numerous professional societies including National Academy of Forensic Engineers, National Society of Professional Engineers, SAE International, and American Society of Mechanical Engineer, among others. He has co-authored approximately two dozen peer reviewed papers and presented at numerous conferences. John is a nationally certified firefighter, vehicle rescue technician, and holds a certification in Child Passenger Safety Instruction. Along with additional training in various emergency service-related disciplines, John’s unique background provides an extensive understanding of emergency service incidents and occupant protection.

John and his wife recently celebrated their 30th anniversary with a trip to Hawaii, visiting three of the islands. They have three grown children, who live locally, and remain very close. John enjoys serving his community and is very active in his local fire company and municipal zoning hearing board.

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Case Manager: Stephanie Bogutz,

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