What was found
APU FAILED TO START-3 ATTMPTS-N1 REACHED 30%-EGT777-THEN AUTO-SHUTDOWN. APU BATTERY, VOLT LOW WHEN CRANKING. REPLACED BATTERY, APU STARTS OKAY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
APU FAILED TO START-3 ATTMPTS-N1 REACHED 30%-EGT777-THEN AUTO-SHUTDOWN. APU BATTERY, VOLT LOW WHEN CRANKING. REPLACED BATTERY, APU STARTS OKAY.