What was found
(CAN) LEFT GENERATOR FAILED ON TAKEOFF, APU STARTED IN FLIGHT AND RT GENERATOR FAILED AFTER. CREW DID NOT ATTEMPT TO RESTART THE GENERATOR ONCE ON GROUND, REBOOTED PLANE AND LT GENERATOR CAME ON LINE NORMALLY. THE RIGHT WOULD NOT AND SHOWS ZERO VOLTS WITH AMBER, RT GEN FAIL). DIFF PROT SENSOR 1 FAIL, POSTED IN THE MDC. R & R THE DPMS1 IN THE LDCPC AND REPLACED THE RT GENERATOR, SHAFT SHEARED. OPS CHECKS SATISFACTORY.