As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOSS OF AUX BUSS ELECTRICAL POWER. LANDING GEAR EXTENDED USING EMERGENCY PROCEDURES. FOUND AUX BUSS RELAY, 9-P, FAILED OPEN RESULTING IN AUX BUSS POWER LOSS. REPLACED THE RELAY, PERFORMED RETRACTION AND SYSTEMS CHECKS IAW THE MAINTENANCE MANUAL.