As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL OPERATION OF THE ALTERNATE EXTENSION SYSTEM POWER PACK AT THE P72 PANEL FAILED TO DEPLOY ALL GEAR DOORS AFTER NUMEROUS ATTEMPTS. PERFORMED TROUBLESHOOTING IAW AMM 32-35-10-4. REMOVED AND REPLACED ALTERNATE EXTENSION POWER PACK. OPS TESTED GOOD AND LEAK TESTED GOOD.