As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. 3 GREEN LIGHTS. HYD PRESS ON LIGHT ILLUMINATED, NOSE GEAR HANDLE IN UP POSITION. RETURNED GEAR HANDLE TO DOWN POSITION. ALL INDICATIONS NORMAL. TROUBLESHOT AND FOUND PROBLEM TO BE WITH GEAR SELECTOR ASSEMBLY, FOUND CONNECTOR P160 TO BE LOOSE, RE-SECURED CONNECTOR. PERFORMED OPERATIONAL CHECKS, NO DEFECTS NOTED. WORK DONE IAW MM CHAPTER 32-30-01.