my 13 year old son was left unattended and died in a mini dirtbike accident on a friends property in the state of pennsylvania.

First, condolences for your loss.  As a father of three I can't imagine what you're going through. You should contact a Pennsylvania personal injury attorney and run the facts by him.  He will advise you whether you have a viable cause of action for the adults failure to supervise your son.  Depending on the nature of the motorbike, there may also be a products liability claim.   Please note that by attempting to answer your question, I am not acting as your attorney. I will do nothing further to protect or preserve your interests in the absence of any additional discussion with you about this matter. John Ratkowitz, Esq. Starr, Gern, Davison & Rubin, P.C. 105 Eisenhower Parkway Roseland, NJ 07068 Office: (973) 830-8441 Cell: (732) 616-6278 Fax: (973) 226-0031 Email: jratkowitz@starrgern.com Skype: john_ratkowitz Web: www.starrgern.com