What was found
DURING FLIGHT WE HAD A "GEN1 FAIL". WE TRIED TO RESET GEN 1 ACCORDING TO CHECK LIST. WE WERE NOT ABLE TO RESET IT. REMOVED AND REPLACED LT STARTER GENERATOR AND OPS TESTED WITH NO FURTHER DEFECTS FOUND IAW AMM 24-31-00. ACCOMPLISHED PWC EMM TASK 05-50-00-210-821. STARTER / GEN UNSCHEDULED REMOVAL. REPLACED STARTER MAGNETIC FACE SEAL PN 3059820-01 ACCESSING GEAR BOX BREATHER SEAL PN 307981801 AND FMU INPUT FUEL TUBE PN 3126971-01. REPLACED OIL FILTER PN 3052590-01. OPS AND LEAK CHECKS GOOD.