As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF LOST GREEN HYDRAULIC SYSTEM PUMP. LOW LEVEL ILLUMINATED, AND LANDING GEAR FAILED TO RETRACT. PERFORMED QRH DECLARED AN EMERGENCY OBSERVED LANDING GEAR SPEED. PERFORMED MANUAL EXTENSION, LANDED WITHOUT INCIDENT. REMOVED AND REPLACED MAIN LANDING GEAR SELF-CLEANING. NO LEAKS AT THIS TIME OPS CHECK GOOD.