No links , I worked for a 135 operator in a management position and the owner gave me the chance to go for the type rating,it was the whole training 3 weeks at Dallas and 7 SIM sessions with a checkride at the end. Got the endorsement on my license for SIC priveleges only but I never completed the 135 checkride so I just jumped in it everytime that I could on the 91 legs under the impression that I was building time. Well it was good experience and hopefully the endorsement will look good in my license for future employers.