As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU WOULD NOT START. ACFT GROUNDED. PERFORMED APU BITE PROCEDURES IAW FIM 49-60 TASK 801, FOUND MAINT MESSAGE 49-41012 LOGGED, NO APU ROTATION. PERFORMED TAIL CONE GVI, NO DEFECTS NOTED. REMOVED AND REPLACED THE APU STARTER GENERATOR IAW AMM 49-41-21. APU OPS SATISFACTORY.