As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED AIR DRIVEN GENERATOR INADVERTENTLY DEPLOYED DURING TAKEOFF ROTATION. CREW RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT, R & R AIR DRIVEN GENERATOR AUTO DEPLOYMENT CONTROL PANEL AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.